Hi Jaime,
Lovely shot. Good composition and framing. I can't fault this shot very much. It's well setup and executed.
If there's only one thing I'll point out, it'll be to give it a little more "action"!
A little sweat on the model would be a good start.
Her right hand seemed to be holding (and not punching) the punching bag. Keep that away.
Great emphasis on the boxing back. Its colour is vivid, the logo is prominent, and the girl's eyes and punch are both focused on it. Really a great product shot.
Great job to get the dof required for the Everlast and the model to be in focus. However the crop of the model's elbow, the fact that it is not a realistic punch pose, and the distracting white lines int he bg detract.
This image is perfect for an advertisement, very well done. I don't think it would work for a catalog though, as the product is not depicted in its entirety.