Help with wet sand and buff
And color. For example wet sanding a single stage metallic could get you into a bunch of trouble.
But really, correctly applied, you shouldn't need to go through all that. You may also want to apply an extra coat of clear (if going base/clear) if you plan on on sanding it flat.
You need a minimum thickness of clear to provide UV protection. Get below that minimum thickness, through wet sanding, and your clear will prematurely fail and fall off.
And I do mean, it will literally, fall off.