Join Date: Jun 2009
Location: British Columbia
As important as the half seat is I think what you really need to remember to get over jumping ahead is holding your shoulder back. It'll discourage you from getting too far forward too soon, and allow you to keep out of the way of your horse and let her do the work. That way it will be easier for you to let her come up to you and then get up off her back.
It's difficult to tell in the second picture (it looks like the bridle has completely camouflaged itself XD) but I do like that release, it's nice- up the neck, you're not completely throwing the contact away over a small jump and I think if you had just TINY bit more slack- not very much, but enough to keep form popping her in the mouth it'd be perfect!
Also, maybe try putting your stirrups up a hole? Not much, just enough to create a better angle for your leg.