How to make flat landscapes in Illustrator

How to make flat landscapes in Illustrator

WE'LL BE MAKING THIS COOL MOON-LIT LANDSCAPE

START WITH SIMPLE CURVES

TRIANGLES FOR MOUNTAINS

ADD SOME TREES

ADD MORE TREES AND SOME BUSHES

ADD MOON

SHADOWS & HIGHLIGHTS

Refer Shadows and Highlights, Glow Effect Tutorial

WE'RE DONE