I do this very thing all day, every day. I've done full & partial wraps, cut decals, hand painted bass drum heads. Any type of decal on the head is going to alter the sound to a degree, cut decals the least. A full decal will give the head a dampened sound, very similar to if you used a Remo Muffl ring on the reso side. The are also a lot of different types of vinyl - different thicknesses, different adhesives, and laminates that are all going to affect the head in different ways, but I've never had it be so much of an issue with changing the sound that it was a deal breaker. With painting, a coated head will be the most durable. I'm gonna disagree with the post above that you need primers or "rubberized" paint. Sign painting enamels on a coated head will last for years if done properly. Clear/non coated heads will be more likely to have issues. Also very important - if you're having a bass drum head painted, it should be done with the head on a drum and tuned how you would normally tune it. Painting it with it off the drum will make it more likely to crack or flake. If you want any more info or want to get anything made up, reach out.