Step 1: First draw a branch leaning to the right, with an apple hanging on the top branch.
Step 2: Draw a branch growing horizontally to the right in the middle of the branch, and also hang an apple.
Step 3: Add small branches near the bottom, leaves and apples.
Step 4: Continue to draw the branches and apples on the right, and draw a full tree of apple leaves.
Step 5: Color the five apples red.
Step 6: Finally, paint the leaves green, the branches dark brown, and accentuate the shadow edges. The simple apple tree is ready.