i did. you can use all one color marker...or go crazy and make it rainbow..your choice.
the effort you will make it to look real, that will matter a lot. 2:keep your hand as much light as you can when you draw: people make mistakes, artists too make mistakes. you have to erase and make it again, so the paper should never have the mark of your erased line.
related posts of "how to make a drawing look 3d" how to draw a 3d room. how to draw a 3d room. there are many pics related to how to draw a 3d room out there. 