I added a comment to Bowser's Castle for some corrections. When you moved the bottom half of the sheet, it looks like you cut part of the castle off on the left side.
Here are a couple other things I noticed if you're interested:
-I know for a fact that Bowser's Battle and Overworld are severely lacking.
-Luigi's Battle sprites are also pretty light.
-Some of the Bros Attacks (Snack Basket, in particular) have some bits that are chopped off.
-Some enemies (Chuboomba, Crawful, both forms of Midbus) are also obscured by effects or chopped off by the frame.
-Some enemies haven't been ripped at all; Jailgoon (Bob-Omb), Leaf Guy, and Wiggler spring to mind.
I'm super excited you're continuing this game after so long!
Here are a couple other things I noticed if you're interested:
-I know for a fact that Bowser's Battle and Overworld are severely lacking.
-Luigi's Battle sprites are also pretty light.
-Some of the Bros Attacks (Snack Basket, in particular) have some bits that are chopped off.
-Some enemies (Chuboomba, Crawful, both forms of Midbus) are also obscured by effects or chopped off by the frame.
-Some enemies haven't been ripped at all; Jailgoon (Bob-Omb), Leaf Guy, and Wiggler spring to mind.
I'm super excited you're continuing this game after so long!