How do you change the resolution of your skin?

I’m trying to make a skin, and I don’t want the resolution to be 16x16. How do I change it??!!!

You need to use this editor:

change the resolution on the right side panel

Yeah, but doesnt that mean that its a texture pack, and other people cant see your skin?

I’m not understanding your question. will only accept 64x64 (not 16x16) skins

Are you talking about block textures?