I would still do a lot more flat work before you continue jumping.
In the first video, if you pause it at frame 0:03, you are getting way, way ahead of your horse and your lower leg has slipped back. In the second video, pause it at 0:07 and you will see the same thing.
Granted, the jumps are low and you are probably just excited to be popping over a fence, but in order to prevent bad habits while jumping, correct position on the flat is necessary. I would have you practicing a lot more two point and work without stirrups at all gaits! Even your posting could use some more practice. I saw a lot of "plopping" back into the saddle on the down part of the post. You need to learn to feel the horse and how he moves and how to stay in time with him.
I probably sound mean compared to the other posts but I see a rider that needs to work on her foundation before jumping. :)
Opportunity is missed by most people because it is dressed in overalls and looks like work. ~Thomas Edison