Check out this graphics shop! My poster for 2 of my stories so far, and it's been fantastic. Especially Omona-mark's work. 
Here's the link :) 
http://www.asianfanfics.com/story/view/1275734/wjh-graphic-studio-hiring-see-chapter-2-batch-one-is-open-graphics-poster-request-hiring-postershop-graphicshop-animatedposter-cover-covershop