I think all in all , you are doing well. Like me, you have short legs, and it can be hard to get them 'under" you, but because I can see the bottom of your boot clearly, it tells me that you are pushing too much forward with your foot, rather than downward with your heel. Think of your heel as aiming toward the horse's back feet, and think of your heel as going not TO your stirrup, but right past it. Practice resting your foot on the stirrup bed, reckognizing the amount of pressure you have on the ball of your foot, then thinking aobut your heel going PAST the stirrup, toward the ground Without any increase in pressure on the ball of your foot.
All this will help you to ride more independently from the rein. I can see that you may be leaning just a bit on the rein because the horse is leaning on the rein.
Notice that his back foot is leaving the ground before her front in the diagonal that is pushing off from the ground. This indicate the horse is pretty much on the forehand.
I know, you are just getting back into it, and this is nitpicking, but just thought I'd share all that I see. You will be a really lovely pair with that horse!