Now I'm probably massively in breach of copyright with this post but you can actually buy all these prints here's the link. Click on any pic and its takes you to his site.
Favourite authors include John Connolly, Lee Thompson, Ed Lorn, Craig Saunders, Joe Hill, Kealan Patrick Burke, Mark Lawrence, Joe Abercrombie, Michael McBride, James Newman & Stephen King. Just to name a few.
I also collect Signed first editions, wish I'd got more money, there's so many books I want and there needs to be more hours in the day.