-Main area to focus on is alignment (your tendency of being too open/aimed left of target causes club to swing too far from the "inside." This is the main cause for pushes to the right and fat/thin contact. Use alignment stick when practicing to ensure proper lines.
-Stay tall to maintain height on backswing and get club more "down target line" at the top, as opposed to laid off.
-Continue to think about the idea of swinging to the left at impact to get the club swinging down the correct path. Using the training sticks on either side of the golf ball and trying to swing through the sticks is a great drill to work with.
-Takeaway straighter back on backswing (feel more rounded) as opposed to swinging clubhead back outside hands
-Feeling right arm wide & straighter on downswing to create more space and not allow club to come so far from inside
-Continue to work on half swings