My Animation Idea

I plan on creating something simple and easy for me to do, I’m not really an expert in animation so the idea is to use basic coding to create an animation. The animation I thought would be cool to create would be an eye and the eyeball would be moving side to side looking as though it’s looking around. Now I don’t know if I will be able to create and so if it seems too difficult, I just might create a circle moving side to side instead which is really simple. Hopefully, everything turns out well.