I see a lovely relaxed horse in a good rhythm, that is using it's back not just it's legs - lovely to see! You're doing a very good job, you're a very neat little rider and I think you will both do well :)
Wallaby, I know there's so much hype about horses being behind the vertical, but there is nothing wrong with riding them occasionally a little behind, a little deep, a little over-bent etc. from time to time when training. It is good practice to be able to place the horse's head and neck where you want them to be. If you allow the neck to remain in one place for the whole ride, you can end up with a horse that braces and is not flexible through the neck and poll.