SteamBoat willy is still A trademarkd Character of Disney and cannot be replicated or make toys etc...All that is Public Domain is the movie, so you can use the movie as you want, repackage it and sell it as your own etc. Unlike Winnie the Pooh books, where you can use the characters, stories etc as you want, for apps, games toys etc...but not the Winnie the Pooh Disny movies. Winnie the Pooh is currently in US public Domain and will be in the UK public Domain in 2026
Fyi, steamboat will is now into the public domain. But, the character you are showing is not that. It is too much like Mickey Mouse. This is a copyright infringement. Sorry, I just think that respect for artists and copyright owners is important.
Shading aside, I did check that there are shots in the OG vid where Mickey has his face straight on, like in my thumbnail, though youll see that my puppet does move to the side views too :)