I played this hack, and it looks good, but there are some errors to fix:

Why are those tiles (on the right) on this message?

Looks a little empty here. I know decoration and stuff isn't the issue here, but you might add some sprites.

See above.

RED STEM ALERT! This patch may help you if you don't want VRAM errors.

I'm stuck here because I was stupid when I let Balrog cross the wall. This also happened with a kaizo hack I was playing.

I think this vine isn't needed, the other two are.

Indication would be needed to know that those ledges are also "carry blocks".

Are you sure you got permission from Carol to use this boss sprite? It's the second time I fight it.

Finally, going down when touching the star causes Mario to get stuck and go to an endless bonus game. [/removallog]