Redlines being made. cannot edit because my internet won't let me upload anything for some reason.
Alright so, basically, if you want this to be sexy give her a sexier look to her face. What you've got already makes her look almost angry, or scared. Elongate her torso, and get rid of that weird hump on her back. Make her shoulders slope downward, she's female. Another thing is to deal with her breasts. They are torpedo shaped, whereas real females **such as myself** find that we have round, 'mounds', instead of torpedo's.
Try looking at some references ((
Boobies ))
There's a picture I found on google of some bunny girls, they've got a lot better shape to their breasts. Basically, what I think you need work on is your lineart or basis for your anatomy. Your coloring style is absolutely beautiful and shows your talent. I love it. Try working on your anatomy a little more.
Great job. ^^