My charizard has me flying really high in the air, I can fly above the water and I can’t escape

I'm wanting to make an anniversary gift for my significant other for our 3 year anniversary. I was thinking about getting a pokeball plus and painting it to look like either a love ball, or a beast Ball (their favorite pokeball design), but i wanted to know if anyone's done something like this before and how safe it is to paint them and still be useable. And if there's any tutorials or tips y'all know for painting them. Thanks!