RE: think I got it...
It is justthe high wrist method,not the most widely preferred method but is an acceptable grip.
For the most part all looks good except to me,it looks as though your weight never gets even over both feet,looks like you are putting more weight on your front foot from the beginning.When shooting at a target that close and low,pull back level keeping the weight centered and then bend at the waist to get on the target.This will keep you in the habit of bending at the waist when shooting downhill.Of course that isn't the best scenario for evaluating form.
How are things feeling now?