osu!stream has a very good skin in my opinion, I made a skin with the game files from github and the result is good, the problem is that I do not know if this is acceptable, obviously nothing is mine, but I have that doubt.
If you take some elements from the other skins, I'm sorry but you can't share it in this forum. However, if you take sound elements only, that's acceptable.
In this forum, you can only share skins that you made by yourself. If you want to share with your friends, you might tell them via direct message or through your user page.