All of the textures (except for the speed and slowness icon, thats from the vanilla game, just edited) were made by me.
You can use and modify them however you want, as long as its for private use.
If you want to use them in a public project, message me on discord @aspoleczne
You can also message me there if you want help with making a resourcepack of your own, or want to report a bug in my pack.