Added four new covers!
A little preview:

I already commented that my experience with Alberto went well, but I should also add that the cover on the far right (which is mine) was on my collection that recently hit the
USA Today bestseller list. So not only did he do a great job, but it also sold books, which is, you know, fairly important.

Oh, and I've created a paperback, which printed great, along with free bookmarks/postcards (I don't sell them; I'm not sure if the licensing agreement covers that - if you're going to create store merch, ask) from the art that I give to fans (which they enjoy). The illustrations look really sharp in print. The illustration he sent is 7490 x 4682 and 300 DPI, so that's not a surprise, but if anyone was planning on printing items, they all look great and the illustration should print cleanly without loss of fidelity.
Anyway, my high recommendation obviously stands. Just thought I'd mention those points!
Nick