I'm going to begin complaining about the fact that the palette in the title screen is way too messed up, especially the bushes (hint: you've enabled your custom palettes for literally every level; enabling the custom palette for a specific level only would be better). You could brighten the spot inside the ledge and darken the orange as well. Don't forget to replace the original messages with your own throughout the hack!
Onto the actual level, the cement blocks' palette are a bit weird, so making them grey like they always were before would look more natural. I've found a few instances where the level got a bit unfair starting when I'm halfway through, like
here, where afterwards I'm greeted with five Eeries on a tight section and, if I scroll to the left, I'm screwed as they will appear again. It would be better if you raised the ceiling a few tiles up to make it more fair to the player.
Here, making that jump back to the ledge took me a few tries. Lower some of that ledge a bit or add an invisible coin/note block and indicate it.
That Fishin' Boo made the first exploding block disappear, as well as the first Yoshi I find from one of the question blocks. Are you sure you set the sprite memory correctly? Check the levels that have it set according to the number of the sprite (on this case, it should be 11). On the aforementioned exploding section, honestly it looked a bit too flat.
Overall, this level wasn't bad on the first few screens, but you could do better. It suddenly went downhill after the moment I came across the first pair of Eeries. I suggest you add a few landmasses and other ways to explore the level and, of course, find a way to make from those a fair experience to the player. Look at the most recent hacks to be more inspired and make this hack unique. I wish you the best of luck!
As a final note, you don't need to cancel every project you start, as you have no idea how many hacks I've started and cancelled. Put the previous ideas into one full hack to be more organized and less annoying to the people who have been following your levels. I won't be really bothered if you give another hack up again, but it would be better if you did that way.
of you
