Okay, just a bit of a warning, I can come off as a harsh critiquer but I'm really not mean!! I'm just trying to help :)
Anyhoodle, so you have a gorgeous little horse here. He looks to be relatively athletic and spunky. His attention towards the spectators is just something everyone has to deal with sometimes but a way to help get his mind off of it is to keep him busy. If your at a show, try keeping him in the other half of the ring or work on something like asking him to bend all the way around the ring (using your inside leg to bend him around and inside rein to direct his head slightly) or just bending him on random circles around the ring. Just keeping him busy will really help! If he's getting distracted while just schooling (not in a show) I suggest doing the same thing, but you could also add in collecting and extending his stride. And working on transitions randomly, but often, around the arena (for example; walk to canter, halt to trot, etc).
Now taking a look at your horse, he looks to me like he is relying on your hands a bit. He also looks a little heavy on the forehand. I'm not sure if you have a riding instructor or not but if so, I suggest to talk to him/her about teaching him to work off his hind end and to drop his head (without the use of aids).
Now, for your jumping picture, Your horse has left the ground with his hind legs evenly. His knees are loose though. He has not been allowed to stretch his neck down and round out over this fence comfortably, but I will get to that in a moment. Looking at you, you have a nice flat back and you're looking up ahead, however, you have lost all security in your leg and your heel has slipped up, causing you to stand in your stirrups in a hurry to get off his back and your crotch is over the pommel. You are lying on his neck and have not provided him with a good enough release, which has resulted in a poor jumping style on his part (because he was not allowed to have his head).
So I really suggest you work on the flat without stirrups and try to get a good base of support from your calves. Your really need to sink your heels down and keep them by the girth, using his barrel to hold on to. Once you have that base of support, you must focus on keeping your crotch over the seat of your saddle (so push your bum back into that saddle!!) and just lift it, rather than standing. From there, you can develop your stomach muscles enough that they can hold you up, off of his neck and you can stretch your arms forward, lining your upper arms along his crest for a good release. Your hand should rest at least half way up his neck, and you can even grab a chunk of mane if it helps!
Well thats all I have to say lol, You look like a good little rider! I'm just picky ;)
Beautiful horse though, I LOVE his colouring!