I agree with your own suggestions!I think the biggest issue is no. 4 and I'd really focus on getting more smooth and horizontal phrasing in there. I think you'll improve 1 a lot for free just by doing that. Small faults with 2 and 3 will also be more easily forgiven, and in fact I think those things will be easier to control by focusing on how you can get more musical phrasing with a feeling of ease.