Hi, this is my first time posting on conceptart, I'm mostly a 2d animator, but I also enjoy illustration and painting from time to time. This is a possible cover for an artbook I'm doing whith my friends. Thanks for looking!
Yeah, you went a little backwards with your focal points. The background gradient moves from darker at the character level to a vivid, very saturated orange directly under a bright blue title. Drawing attention with the title is basically a given due to the nature of book design, but drawing attention away from your characters at the same time can have a negative effect on the presentation. If you reverse that gradient so it gets brighter down at the table level, I think it'd be a lot stronger. You'd still have that sweet warm/cool contrast because of the gooey blob there on the table.
Anyway, good stuff in general. I have no idea what is going on, but I dig it ;p