I'm not sure if anyone else will agree, but it appears that you are sitting on the rear end of your saddle, and leaving the extra space in front of you. When, in fact it should be the opposite. You want to sit, as much as possible, in the center of the saddle, not at the rear end of it. I think that will also help with getting your legs more underneath you.
Like Zexious said, heels are crucial for balance, and will help you stay on your horse if he should suddenly decide to spook/balk at a fence/stop unexpectantly, etc...
As for your friend on the pony, she obviously has the basics of a two point. Pretty decent release and position, but, again, heels! This will help make sure that she stays on that pony should he decide not to jump. She's a bit ahead of the horse in the photo. The horse hasn't even left the ground yet, but she's in a full two point, and might make the landing harder to balance. Let the horse's movement and body push you into the two point, instead of forcing it. If that makes any kind of sense. That's the best way I think about it when I jump, I let the propulsion from the horses jump almost launch me into the two-point. You want to be "one" with your horse over a jump.
Other than that, I'll just say, that your critters are adorable!