Very nice beginning. There is good advice above and I have little to add. Maybe the stirrup one hole shorter to allow you to settle into the stirrup easier.
Lovely horse and you two look good together. Are you going to be able to take any jumping lessons where you are? Now is the time to think about it. You are a really nice team and the beginning is when bad habits can start. I would hate to see a combination with so much promise go down any wrong paths.
If no lessons are in the future, keep posting your progress. Cyber coaching is better than nothing