Last illustration?

I futzed with this all afternoon, and I'm going to let it sit for a day or two and decide whether or not to do it over. I liked the way some of it came out, but I am unhappy with the mug (which is the point of the whole drawing, since it's to advertise Book Café!).

That turquoise color is really hard to work with, and the more I tried to push it, the more it pushed back. I ended up with rather a mottled mess, with weird highlights and smudgy shadows. I don't really have the time to be doing it over, but...I may anyway. Perhaps we are fated to have a lime green mug instead...

I wanted to include three diverse books, for various reasons; Love & Gelato is a contemporary coming of age / romance, The Diabolic is sci fi / dystopic and is on the ballot as one of the Teens' Top Ten for this year, and Crooked Kingdom, the second in a duology by Leigh Bardugo, is my favorite book so far in 2017. But I'm not sure the color combo works between the three books, either; I should have put the white book in the middle instead of on the bottom, and the red pages on Crooked Kingdom are a little distracting (even though they are that color).

I guess I'll ponder...and ask the opinion of my colleague, Anarda, and/or maybe a few teenagers...