wow this construction is so crazy. Where is the door ! 

i could fall down stairs for infinity! great work!!

a great interpretation of an overdone subject. I would like highlight but can see where that may not be possible.

I like Escher's work, and I like yours, too. That's a favorite.

 I tried doing this myself..  It was a pain in the ass.  Good work--I knew what it was immediately.  ^^ 

A big fan of escher.  Nice work.  Favorites.

looks good, but some of the stairs do not look right, apart from tht its good

 Actually those lines aren't black, but I know what you mean, they are a tad dark. I tired doing people multiple times, but they all looked horrible.

nice original idea, and one of my favourite escher pictures, you pulled it off ok, but i think you tried to cram too much detail into one room my reccomendations would be to exchange a lot of the black outlines for darker/lighter shades of your base colour, and.. hmm.. perhaps add a person in there, walking on one of te sets of stairs which is at an odd angle, making him confused or something- who knows good work :) 3/5