Stuck here for more than one ♥♥♥♥. I almost thought it impossible until i saw somebody have got the achievement. So how??? pls help me!

just want the pink forest steam background

This is an exact copy of "Zen Puzzle Garden" by Lexaloffle: http://www.lexaloffle.com/zen.php

i've tried this level dozens of times, anyone help pls.

I'm baffled by this puzzle. Anyone have hints?