Photoshop Gurus Forum

The Drawing i am about to show is part of my art project, it took me 2&1/2 hours to complete but it's still not there yet me thinks, it needs something but i think it needs something in photoshop not on paper. so i'm going to leave you with the drawing, and ask you very kindly about what to do with it in photoshop (APART FROM: penning it in, i already know that will be on the list of things to do)

I'm not usually a fan of colour on my sketches, but if you can give an effective technique on how to add colour without making it look monotonous. i will be incredibly happy

Thanks