This was a custom ordered shelf for two roommates who love Batman, and a personal favorite to work on.
In fact, I liked the final result so much that I made myself a plaque in the shape of the shelf to hang on my wall, as a tribute.
large piece of 3/4" plywood
dry wall screws
Step 1: Draft it out
This project needs to at least a little thought through in order to come out with a good result. I drew up a quick sketch and approximate dimensions that would be realistic. As a template, I used the most recent Batman movie bat signal design (from Dark Knight), because of the flat wings.
I found a picture of the symbol online, photoshopped it, blew it up to scale, and printed it out on multiple pieces of paper, and taped them together, and then taped that to the plywood.
(I attached the template that I used)