A new driver is a thing of beauty. Shiny, colourful, ready to knock a ball down the fairway ... and then you get a nasty little white mark on the top of the club head. How do you get that mark off and keep your club looking as great as the day you bought it?
Gather everything that you'll need together in one area and lay the towel down as a work area.
Scrub the mark lightly with water and a paper towel. Usually elbow grease can get marks off if you clean them the day after the round, but it does take some time. If after a few minutes it doesn't come off, switch to the toothbrush, add some soap to the water and scrub in a circular motion like you're cleaning your molars.
Move to the buffing compound if the toothbrush and soapy water don't work. This compound can be any scratch remover that you can get at an auto parts store; these products help remove small scratches from a car. Follow the directions from the product and work it into your driver.
Accept that you cannot remove the mark yourself (if this is indeed the case) and take the club to a professional--either the club manufacturer or a local repair shop--who can take care of it relatively quickly and for little cost. Ultimately the sky mark, while annoying and a reminder of a bad shot, won't affect continued play unless you let it.
If you keep getting sky marks, chances are good you're teeing the ball too high.
There is one final potential step: If the scrubbing and chemical treatments don't work, you could try buffing out the mark using a buffing tool like a Dremel, but if you're not a proficient user, the chances for doing more damage is high. This isn't recommended unless you're really good with those kind of tools.