If I may I would like to offer some feedback.
The biggest problem you have with the sprites are that you're trying to add too much detail on sprites that are smaller than what Elephant Mario should be. The Big Mario sprite from SMW is probably not going to cut it to edit in the details for elephant Mario.
HOWEVER, It is possible to make Elephant Mario in the style of Super Mario World. However, this may mean that you'll have to find one of it's larger sprites and use that as a reference for what the width and height of the sprite would work best to get as much details in for Elephant Mario to work. However, this would mean that you have to make a rough drawing from scratch and then build up the rest of the sprites from there.
It's not the most pleasant thing to hear to start over, however sometimes it's a necessary thing instead of frustrating yourself sticking to the same thing and not getting anywhere with it.
Up to you if you wish to take the feedback, however that is the observation that I'm making based on the recent version.
EDIT:
You may want to have this on hand for reference.
The biggest problem you have with the sprites are that you're trying to add too much detail on sprites that are smaller than what Elephant Mario should be. The Big Mario sprite from SMW is probably not going to cut it to edit in the details for elephant Mario.
HOWEVER, It is possible to make Elephant Mario in the style of Super Mario World. However, this may mean that you'll have to find one of it's larger sprites and use that as a reference for what the width and height of the sprite would work best to get as much details in for Elephant Mario to work. However, this would mean that you have to make a rough drawing from scratch and then build up the rest of the sprites from there.
It's not the most pleasant thing to hear to start over, however sometimes it's a necessary thing instead of frustrating yourself sticking to the same thing and not getting anywhere with it.
Up to you if you wish to take the feedback, however that is the observation that I'm making based on the recent version.
EDIT:
You may want to have this on hand for reference.