Draw a simple trunk with two slightly curved lines
Add a wide cloud-shaped or round canopy on top
Make the trunk thicker at the bottom
Add a few main branches coming out of the trunk
Draw smaller branches extending from the main branches
Fill the canopy with loose leaf shapes or small clustered curves
Add a few leaf details around the edges
Keep the outline simple and uneven for a natural look
Add grass or a small ground line under the tree
Shade one side of the trunk and canopy for depth