@TheGeekZeke101
Imagine a wrist/palm area as one piece.
If you want to move it one block towards the player you will have to delete only one line/column of brown blocks. Won't make huge difference to the model and you can't do anything else anyway.
If you want to move it more than one block that you have to slightly change brown blocks algorithm (ex. 2 blocks, 1 block, 2 blocks, 1 block, etc.). So maybe you will have to change to something like (ex. 1, 1, 2, 1, 1, 2, 1, 1, etc.) So your arm will look straight.