I think that for moves of more than 2 squares it gets difficult to tell easily what the move is exactly on those tiny diagrams. There's a lot of redundancy in your images because everything is repeated 4 times, or more.
If you really need to represent the pieces with their movements, try doing it more abstractly.
Using letters would be ok if you can't get good images. Maybe just use letters for things you don't have images for yet.
I think that for moves of more than 2 squares it gets difficult to tell easily what the move is exactly on those tiny diagrams. There's a lot of redundancy in your images because everything is repeated 4 times, or more.
If you really need to represent the pieces with their movements, try doing it more abstractly.
Using letters would be ok if you can't get good images. Maybe just use letters for things you don't have images for yet.