I think if you worked with an experienced hunter coach who can help you with the manners and way of going that's expected, she might do quite well.
In the photo you posted, she looks more like an eventer; like she galloped to the fence a little, and is jumping in a long, flat arc. But she's cute and a hunter type, and if put to her fence from a slower pace and deeper spot, might well round up over her fences and really snap her front end as expected in the hunter ring.
In the hunter ring, you'd be considered a little big for her. Not that your weight is too much for or anything of that kind, but your lower leg isn't firmly anchored on her side, and you've jumped ahead quite a bit. The juming ahead, combined with an upper body that's long for the size of the pony, means you're releasing 3/4 of the way to her ears and probably weighting her front end a bit. You can make this work and look as if you're a better fit on her, but will need and instructor's help to tighten your lower leg, stay a little closer to your tack, and use a more appropriate release. A little ahead of the motion turns into a big deal with you're a little larger than ideal, relative to the pony.
Whether or not she's "pony finals material" depends a lot on factors I can't evaluate from a single photo - what kind of mover she is, whether or not she has auto changes, what her jumping form looks like when ridden differently, but I don't see anything in the photo that says she couldn't do it. Getting to finals, even in the Green divisions, requires a pretty big showing committment from the owner and rider to qualify; and she might need a season or two of mileage in the As before that's realistec.
Last edited by maura; 09-03-2012 at 04:29 PM.