Colourmatic - Hard 4*

I'm gonna be honest with this.

Gameplay: 7.5/10
The wave part has good gameplay which makes you enjoy the decoration, but sometimes has huge difficulty drops (from 2* to around 6 - 8*) which make it inconsistent in some parts. About the cube part, it's very buggy and some troll jumps make it kinda annoying, like that tiny spike at the beginning of the section; almost at the end you have to hit the first column at the edge or you'll end up in the spike of the second column (I guess both of them are intended). Also, at the beginning there's a glitch where if you hold when dropped midair you will end up with the wave upside-down, and also makes getting to the cube part impossibile, because you would fall midair.
Overall: The gameplay is good but inconsistent, and at the end it's a bit buggy and requires memorization.

Decoration: 8.5/10
The decoration is REALLY good. In the wave part there are a lot of background effects and the block decoration is very well made, but it can't be 10/10 because the cube part has no decoration, and it's like playing a layout with black background.
Overall: The decoration is really good, but the cube part has no decoration, making the level worse.

Sync: +1
There couldn't be much sync as the level is 80% wave and in the last 20% the song is too low to have much sync, but the transitions actually had sync, so I think it's good. I know in the wave part there could have been more sync, but for the concept of the level it's already good.
Overall: Good sync in transitions, there couldn't be much anywhere else.

Originality: 9/10
There are not many levels like your level, but there are some levels which are rated and have the same concept, but in that concept usually the gameplay is flat and you just have to look at the level. Let's not talk about the cube part.
Overall: Original

Overall: 16/20
The level has very good gameplay and decoration, but the inconsistency in the wave and the cube part make this less good, and so I don't think it's still feature worthy. If you redone the cube part and balanced the wave, I think it could be featured very easily. I suggest you to improve at making cube parts, because if you can make that good gameplay in the wave I'm sure you can improve the cube part, too.