krazy....I sanded mine b/c I screwed it up the 1st time around. To MY knowledge/personal experience (anyone feel free to chime in), the finished look will be more or less the same. Its gonna be matte, you need to apply lots of clear coat to get a little gloss out of it. Sanding it from scratch will help apply the paint easier/more even and with less drips. But if you're careful enough and dont overspray it should be fine. Hope this helps some....
tphskab-if you're too lazy to read through this, DONT attempt this mod b/c it requires time patience and a perfectionist's attention to detail....The paint is cheap, its the quality of your work that needs to be expensive.