Draw a Mountain with Trees: Scale and Placement Cues

Object Drawing Lessons

This lesson teaches a reliable method for drawing a mountain with trees so the trees look correctly sized and placed. You will use a simple height convention: tree height is measured from the baseline (ground contact) to the midline of the trunk, not to the tip of the foliage. Because tree styles vary, the rubric accepts any consistent style as long as the height convention is followed. All measurements are in centimeters unless stated otherwise. The mountain silhouette and tree markers described here are planned as a printable plate, but the drawing can be done on any blank paper. Work through the sections, study the worked example, then solve the four practice exercises. Each exercise is self-contained and includes a reasoning path and a check method.

Practice materials: Printable downloads are not available for this lesson yet. Use the instructions and four exercises below.

Set the baseline and the height convention

Draw a horizontal baseline across the lower third of your paper. This line represents the ground plane where the mountain meets the foreground. Mark a point on the baseline as the mountain's left foot and another as its right foot. The mountain silhouette rises between these points. For tree height, use the baseline-to-midline convention: measure from the point where the trunk touches the ground up to the vertical middle of the trunk. Do not measure to the top of the foliage, because foliage shapes vary widely. This convention keeps comparisons fair across different tree styles.

Label the baseline with a small tick mark every 2 cm. These ticks are placement cues, not a strict grid. They help you compare tree heights and spacing without needing a ruler for every stroke.

1. Draw a horizontal baseline and mark its left and right ends.
2. Add tick marks every 2 cm along the baseline.
3. Decide that all tree heights will be measured from baseline to trunk midline.
4. Write the convention at the top of your page: height = baseline to midline.

Place trees using scale cues

Trees closer to the viewer should generally be taller; trees farther away should generally be shorter. A common approach is to make trees with trunk bases higher above the baseline shorter, but you may choose any consistent height assignment and record it. For example, a tree whose trunk base is 2 cm above the baseline might be 6 cm tall, while a tree at the baseline might be 10 cm tall. These numbers are hypothetical examples, not standards. Choose your own consistent values and write them down so you can check your work.

Placement cues also include overlap and spacing. A tree that overlaps the mountain silhouette should have its trunk base on the mountain slope, not floating in the sky. Vary the distance between trunk bases to create natural grouping, or use equal spacing only when you deliberately intend a pattern and note it.

1. Choose two hypothetical heights, such as 10 cm for foreground trees and 6 cm for midground trees.
2. Mark trunk base points on the baseline or on the mountain slope.
3. Measure each tree from its trunk base to its trunk midline using the chosen height.
4. Check that adjacent trees differ in height and spacing unless you intend a pattern; if you intend a pattern, note it so the rubric can accept it.

Draw the mountain silhouette and add trees

Draw the mountain as a simple triangular or rounded silhouette between the two foot points. Keep the peak above the baseline by at least 8 cm so there is room for trees on the slope. Add a few slope lines to suggest ridges, but avoid full range layering because this lesson focuses on a single mountain with trees.

When adding trees, start with the largest foreground tree near the baseline. Then add midground trees higher on the slope with smaller heights. Finally, add a few small trees near the peak using the smallest height value. Check each tree against the convention: baseline to midline. If a tree's foliage extends above the midline, that is fine; the height measurement stops at the midline.

1. Draw the mountain silhouette with a peak at least 8 cm above the baseline.
2. Place the largest tree with its trunk base on the baseline.
3. Place midground trees with trunk bases on the slope, using smaller heights.
4. Place small trees near the peak and verify each height from baseline to midline.

Check scale with simple arithmetic

Use arithmetic to confirm relative scale. If a foreground tree is 10 cm tall and a midground tree is 6 cm tall, the ratio is 10 to 6, or about 1.67 to 1. A tree twice as far away might be half as tall, but you can choose any consistent ratio. Write the heights next to each tree in pencil, then erase the notes after checking.

A useful check is to compare each tree's top to the mountain peak. Add the trunk base height above the baseline to the tree height; the result should stay below the mountain height. For example, if the mountain is 12 cm tall and a tree has its trunk base 5 cm above the baseline with a height of 4 cm, its top is at 5 + 4 = 9 cm, which is below the 12 cm peak. This is a hypothetical example; the point is to use simple addition and comparison, not a fixed rule.

1. Write each tree height in pencil near its trunk.
2. For each tree, add its trunk base height above the baseline to its height.
3. Confirm that each sum is less than the mountain height.
4. Erase pencil notes after confirming consistency.

Worked example

A mountain silhouette is 12 cm tall from baseline to peak. You want three trees on the left slope with trunk bases at 2 cm, 5 cm, and 8 cm above the baseline. Using hypothetical heights of 8 cm, 5 cm, and 3 cm respectively, check whether each tree's top stays below the peak.

Four practice exercises

Common mistakes

• Measuring tree height to the top of the foliage instead of the trunk midline. Use the baseline-to-midline convention for every tree so comparisons remain fair across different foliage styles.
• Placing all tree trunk bases on the baseline, making the mountain look bare. Place midground and background trees with trunk bases on the mountain slope, using smaller heights.
• Using identical heights and spacing for every tree. Vary heights and spacing between adjacent trees unless an intentional pattern is chosen and noted.
• Letting a tree float in the sky without a trunk base on the ground or slope. Mark each trunk base point first, then draw the trunk upward from that point.

Self-check rubric

• Baseline is drawn and tick marks are present.
• Height convention (baseline to trunk midline) is stated and followed for every tree.
• At least one foreground tree and one midground tree are placed with different heights.
• Tree trunk bases sit on the baseline or mountain slope, not floating.
• Heights and spacing vary between adjacent trees unless an intentional pattern is chosen and noted.
• Simple arithmetic check is shown or described for at least two trees, comparing each tree's top (base height plus tree height) to the mountain height.
• Alternative tree styles are accepted if the height convention is consistent.

Questions and answers