Ok, I swear, I'll lay off the critiques on your page for awhile. (I understand if your getting tired of me!) Anyways, another awesome piece of art that you've done! I just love Monster High, and my room is loaded with the books, dolls, (I collect them very strangely) and all that other good stuff! Frankie is my favorite character and she looks very alluring in this pose that she sports with Jackson and Holt. It's also very interesting to see these characters in your art style. Your vision is perfect for these three as well. I'd say you get another A+ for the day.
P.S: I'd love to see more Monster High characters in pictures like this; by using your talents in this way, not only will you be an exceptional artist, but you'll make some badass fanart. Hey, one day you might be seen by someone big and get your art out there! And as always, keep up your awesome work!