Originally posted by GeorgeMP
It's not bad but its clearly just SMB 1-1 but with some new elements like Yoshi and additional Piranha Plants.
Level Remakes are not something people particularly like to see in hacks.
That said if you can think of a cool twist for the level you might be able to make it more unique and interesting.
Lastly I noticed that the plants have red stems. There is a patch is fix this as they can lead to some rare errors if not corrected.
Also the GFX your using for the foreground seems to not be using the correct palette which is why it has a lot of black on it when it shouldn't.
Sorry if this criticism sounds harsh but its just some advice so you can improve on what you have made.
You mentioned how the wall-jump is a feature of this hack. Maybe use that and make levels that focus more around that?