[quote=@Cyrania]
General question. Where's a good, reliable source for the images for the posts? I mostly search on deviantart.
[/quote]

Probably depends on what you're looking for. Artstation is nice for scenery and buildings especially, lot of concept art there. 

I happened to have the art for one of my FCs on hand, but personally I'll probably swap to the tried and true "character name" header... lol.