For a marker rendering this looks pretty awesome. By the looks of this picture it looks like some one look up from the bottom floor of an apartment complex. I see nothing wrong with this picture you have done. I also like how there is a bridge or some thing connecting to two sides of the building. I am sorry it took me this long to submit a critique on this piece of art you have done. Keep up the awesome job that you do. I hope to see more great work from you and other great artist like you. I thank you for asking me to critique this picture.
Hmm well it didn't take that long to actually to the drawing because i sketched it out at first a few times, but all the extra details and layers or marker to show the different shades of light and shadow took a while to try and get right
Peering down from the top of the building i can feel the fear of falling down im actually scared of heights and this representation of heights and depths is really effective to scare the hell out of megreat job.