The tilesets submission was received, I am now sorting and working through it. It might take some time, but I want to release new version of the archive as soon as it will be possible.

That would be great! Of course, I will be happy to add it. I recently moved to another flat, and currently have a lot of ongoing projects, but I hope and promise I will find time to catalogize your collection into the archive in near time.

Okay, I decided to make the level. I still have no specific idea, but I hope when I write it officially here, I will keep it in mind. The level will probably be small and short.

Shoes are cool! And gloves idea was "reused" in The Great Work if I remember correctly.

In the first quater of this year I worked on a project making the tilesets browsable more easily. Unfortunatelly it kinda stalled and I did not finish it yet, since I somehow lost the flow. Recently when I was reading posts on Niffcord I noticed a few mentions about this Custom Content archive and realized it is quite shame I never published it despite mentioning I am working on that. I realized I made a alpha test version of the archive, so I decided to publish it "as is" for now, since it could be useful anyways.
Getting back to the project after a half of year could be a challenge, but I am considering continuing my work on it. That is also why I am posting this to get some feedback and maybe some insight what to do next. I had big plans with this project, and got a bit overwhelmed - just that probably was the case I discontinued it for some time.

The level Fishy is very unique one, totally different from other KS levels. And one of the few ones that actually take place underwater. At start I was a bit confused distincting foreground from background tiles, but it was fine playthrough afterward. The other one I have not played yet, I will give a separate review later.

I haven't played the original Petals, so fortunately I don't have to compare it. I loved the mushroom caves part the most, so visually appealing! And the music! The enemies bothered me a bit, but it was the most beautiful area I recently visited in Knytt Stories. I reminded me the feelings having playing the start area of Frozen Mountain 2. When I came back into the plain dark, I felt was very sad this area was over.

I might need an another playthrough, since I did not find all the collectibles. And in the end I was a bit lost in the puzzle, but that was probably issue on my side. Since I wanted to enjoy the level, even if it was hard for me, I splitted the playthrough into a few days - and somehow missed the level exit after finding the last powerup and started backtracking. I thought it would not be a nice experience, but the atmosphere got me again and it completely stopped bothering me. Additionaly I was able to find a few secret locations I completely missed before.

Hey that was my plan to do as next step! However, thanks for doing a part of it. You've done good work.
I plan doing some data analysis, since I already downloaded all the levels from the archive a few months ago, and stitched together some tools to export and analyse them. However a lot of manual work will be required, so having some of the these tilesets linked to their authors in filenames will help me a lot (I will be able to match them with the analysed content).
I wanted to announce this idea later, when I would be sure,  but after reading your post I realized, I could make it much easier for you right now, when you want to continue extracting the tilesets. If you want, I can send you all the exported tilesets at once, however I need some time to polish some things in the scripts to make the export more useful.