Forest Shadows

I have done probably a couple hundred puzzles...many were difficult. I decided not to continue with this one shortly after trying to even put the edges together. There are many flat sided pieces that aren't edge pieces, and so much of the puzzle is very dark. Maybe I just need something easier after recently completing several very difficult ones. But these pieces were just too dark and similar to hold my interest. It's a nice image. Seems like lots of puzzle images online are much lighter than they are in person. I'm disappointed that I couldn't find the energy to work on this longer.