I always appreciate when people make easy, casual level that have some of the more novel components like Tiptow. This gives novice players a way to explore some of the mechanics while they are still getting better at the game. One thing that was pointed out to me is that casual levels are great for kids to enjoy. This level is generous regarding checkpoints, which is important for casual levels.
I think a few small changes could take this from being a good level to a great level. First, some use of backdrop and asymmetry could add some pop to the design and signal how much time you put into it. Secondly, you have a ton of jems, but many of them are on the main path. When players have to go out of their way to get jems it feels like more of an accomplishment. Same thing for your hidden area. I accidentally fell into it, so I didn’t feel clever for finding it. A secondary benefit of all this would enhance the fact that players can go for a speed run or high score separately.
Lastly a little bit more variety, and maybe even a ramp up in difficulty would be great. As an intermediate player, having the same rooms over and over started to get a bit repetitive. even though this level was designed for casual players, it’s quite possible to cater to both audiences.
As a whole, I love that you’ve built something casual players can enjoy.