If it makes you feel better, I'm actually away from my computer for the remaining days of vldc, so I'm stuck with what I got. if I can be away for three days without vldc, then surely you can pull a last minute miracle. Other than that, I'd say just say submit to the base rom whats been done. A good amount of effort shown here shouldn't be wasted.
This is a fun level from the looks of it! I like how you're focusing on one gameplay gimmick, and the level theme is cool as well. ()
Shame you've lost motivation though, but it'd be even more of a shame if you ended up not submitting it. You could at the very least submit the level in its unfinished state (maybe have a message box at the start pointing it out), or move the midpoint and just give it a proper ending. Nothing wrong with short levels!
Design-wise, this is not the most innovative level ever, but it offers platforming gimmicks that are challenging and well thought out for the most part. The difficulty relies heavily on enemies - which isn't a bad thing, but I feel there's too many of them in one place sometimes. (Also, there are places where question blocks could easily push you through platforms - don't know if that's just my playing style, but if you can, try and move the blocks up maybe?)
The layer 2 gimmick in the second part is interesting - visually, too - though I had trouble "parsing" it in places and figuring out what the intended path through an obstacle was. I also managed to get a powerup stuck inside the ground (I think it's the area in the last screenshot? No big deal though.)
As far as visuals go, I especially like the color animation shenanigans on layer 2/3. You're not going overboard with decorations and fanciness but still manage to make it look distinctly different from the run-of-the-mill vanilla level, which is great.
Overall, it's a well-made level that I'd say is on the challenging side. And in any case, it's great you got it done in time. Feels nice to have finished something, doesn't it?