The tanks looks ok but the forest in the background looks like

Keep it abstract. Don't draw trunks and trees, just a vague lumpy shape along the horizon.

Show the surface of the road with round blobs getting smaller with distance.

Fade things in the background. The further away they are, the paler and less saturated they should be.

Make the tanks themselves look more like the polandball style. Use outlines and lose details. You don't need to see the engine vents or turret brackets.

>>2616739
Dont think of trees as contours, think of them as different assortments of values.

I am of highly approvings this, especially being of hussar descent and living a land of pole, doing job of god anon