I'm gonna start by talking about the level as a whole. I did not like the section of the level with layer 2 scrolling at all. First of all, it felt weird not having the right music (which was weird). Layer 2 forcing the background to be black kinda ruined the atmosphere for me. Maybe it would be better as grey, but I'm digressing. The most important part of a level is the level design, and I did not have fun with the sublevel. It was basically jumping from one gelatin block to another while they scroll up and down. Nothing clever was done with the layer 2 scrolling. In fact, the scrolling itself was more of a detriment to the level design than a boon. The only time it really even affected the player was the part with the upside down lava. It was only used for a few screens and the way it was introduced was quite unfair because if you tried to get all of the blocks right at the beginning, you are basically stuck. The player needs to be introduced to the happenings of the sublevel without any danger, so the gimmick is fair. In my opinion, the sublevel does not improve the player's experience and should be completely redesigned. If you think it can be saved, by all means, go ahead and try to save it. Though, I already explained that it messes with the atmosphere and, in this context, doesn't work well for the level.
In general, the level felt a bit disorganized. The presence of the green breakable blocks did not feel justified and they were just confusing. I don't understand why they were there really. The green blocks with the coins, too. They were especially confusing because they were prevalent throughout the level and I could not figure out their function. Why are they there? They confuse the player.
Now, I'll nitpick. Can't you have the employee of the month sign completely filled in with white. It looks weird with the missing block after the goomba jumps out. Also, I think it may work better if it was a bit later in the level. It comes out of nowhere being the first enemy in the level (but this is completely subjective; leave it if you desire). The hidden springboard in the gelatin is senseless. Nowhere else in the level is anything hidden like that. Just have the pipe accessible normally. And what's with the free life? I have no clue why but when the layer 2 goes as far down as possible, spin jumping makes a bullet bill sound effect. In the third sublevel, I understand having the free life obtainable by using the cloud but all those question mark blocks and especially the coins mislead you to think you can get it without the cloud. It's a secret anyway so why the coins? I don't know how you'd go about fixing this, but I really don't like the small workers only area because it uses an invisible wall. Try not to use one. Also, the chest is easily obtainable by use of cloud. And wrong music in goal area.
Sorry, Camoslash. I'll try to play your level later if someone else doesn't first.