It looks to me like your troubles are happening because of where you are sitting in the saddle. It looks like you are sitting too far towards the back of the saddle, which pitches your leg forward, and makes you feel like you have to lean forward to compensate. Scootch your seat forwards so that you are sitting in the middle, but a smidge towards the front, not on the back part of the saddle.
If you were to draw a line from your seat to your heel, it wouldn't line up would it? Scooting your seat forward will make it easier you to get your leg underneath you so that you don't feel like you have to lean forward to remain balanced over your stirrups.
To turn your toes forward, think of raising your heels a little because your leg cannot act as a shock absorber and remain soft if your heel is jammed down. You don't want all your weight in your heels, you want it even throughout your whole foot. Imagine a flat board as stirrups, and keeping the bottom of your foot as flat to the board as you can. The way you have your heels, only your heels would be touching the board. Make sense?
So lift your heels, and then as you're sitting in the saddle, open your legs so that your thighs lift straight away from the saddle. Then point your knees at the saddle, and allow your legs to drop in that position. You won't grip with your knees, but you won't be able to get those toes forward if your knees are pointing too far to the outside.
I really like the way your shoulders and arms are very soft, and making a straight line from your elbow, through the rein to Jubilee's mouth. That's wonderful. Your back looks basically fine to me, it's the other things that need the fixin'!
How is her head crookedness doing?