wet sanding is an excellent idea but if the orange peal is on the bottom as well your gonna sand all day and not get anywhere untill you get to the orange peal or where ever it fucked up. id just sand and start over. i know clear kits are gettin expensive but when it comes to paint sometimes its easier to just save time and start over, just make sure u let it cure or else youll have a chemical reaction and then youll have start all over with paint. just figured id throw my two cents in. (i worked at a bodyshop before napa)