First of all, if you want us to give you a good critique, you've got to at least give us a good photo. That's a terrible conformation picture. No, I don't see any glaring issues from it, but it would be much better to get a photo of her from each side, with her standing square, as well as a front and back shot.
If she's 3 1/2 and only 13 hands, chances are she will be too small to be (let's say) a pro rodeo horse. Not to say she can't excel at another level, or make a nice kids pony, but she would need to be bigger (minimum 14 hands) to possibly be competitive at bigger levels.
∞•*˚ Βгįťţαňγ ˚*•∞
It is not enough to know how to ride; one must know how to fall.