Need help desiging my own tattoo?

im in the process of drawling out my own tattoo for my back, i've already drawn out the letters of my last name, and im looking for a picture of a angel and a demon/devil that are in the similar style that i could kind of use as guides...if anyone has any ideas of web sites or places to look other then going to nearby shops i would appriciate it, it doesn't have to be pictures of tattoo but could also be pop art