After a quick outline sketch I blocked in the colors lightly.
I continued working on it and kept adding color and detail as I went. I only used 2 brushes throughout: size 10 and 6, I think. I really like those brushes with gel grips.
I continued adding more details and at the end I added a little bit of a background.
And here a picture that also includes the original photo that I worked off of. This way you can go ahead and critique and judge as you please.