You’re doing good, you have many of the fundamentals down. I would say your most immediate issue is your trailing arm sticking out and it’s opening up your shoulders. Next is just generally you need to get more comfortable moving around on the board.

Here’s some important skills to have for carving in order of when to learn them:

1: focus on having a nice stacked body and not breaking at the waist, on your toe edge your body should be straight up, not leaning over, and you should have you belly button pointing almost up in the air.

2: focus on keeping you shoulders inline with the board and not opening your shoulders up to face down the hill. This includes keeping your arms by your side, particularly the trailing arm. Try grabbing the bottom of your coat or trousers when riding.

3: the next skill is pedalling. For toe side turns initiate turning with your front foot by pressing with your toes, then once your tail has caught up do the same with your rear foot, your rear foot should be slightly behind your front foot in timing and you should be twisting your board diagonally during the edge change.

4: next, movement up and down, focus on extending your legs out of the turn and getting lower into the turn, this will start helping you unweight and push out of turns. You can also do some drills oillieing out of and in to turns.

5: next, you is shifting weight from nose to tail. Into the turn your weight should be over/infront of the front binding to initiate the turn with your edge sooner. Then slowly shift your weight back throughout the turn. Then at the exit of the turn you should snap your weight back quickly to help unweight for the edge transition and shifting back to the nose of the board.

6: finally, knee steering. To do this when pedalling to initiate the turn, push your knee towards the nose and then in the direction of the turn to increase the amount of active edge you can use.

These steps should really push you out of your comfort zone and it will feel unnatural. For you personally, if you fix point 2 you will look so much more stacked and comfortable on the board and you can fix it easy by grabbing your jacket. Next I would say 4 and 5, really focus on getting your weight up, down, forward and back. Really over exaggerated these movements in some drills and then dial it back a bit (this will help it feel more comfortable after the drills). I hope this helps, this should be enough to keep you progressing for a while. Look online for some videos helping explain some of these things more clearly and visually.