It's really fun and conveys a nice spirit. Maybe the D and C could be on either side of the tree trunk? And perhaps a font that's a little easier to make out? Make the book a little more v-shaped so it;s more recognizable as a book? Sorry for the delay in commenting! Nice work, and thanks for making changes.
It's really fun! Can you try an other fonts, something a little clearer, but still youthful? And Not sure about the colors, maybe the DC could be a little more subdued, or the same colors?
Can you put the words on the right hand side of the image, allowing the type to be larger and easier to read? also, can you show us what a b/w version would look like, as well as a monochromatic one?