If you have a vinyl top then remove the molding separating the vinyl and paint. Drip rail chrome really should be removed also, but can be extremely hard to take off undamaged. If you plan on buying all new drip molding then definitely remove the old for painting. But if you want to keep the originals then it might be better to leave them on and let the painter mask around. If you have hub caps it's easy to just take them off. While the paint shop should completely mask all four tires, overspray can still find its way in. It's sometimes better to play it safe and just remove wheel covers. You scuff up existing paint for two reasons. First, you want to get rid of any oil, grease or dirt trapped in the top layer of paint. This is the stuff that cleaners and degreasers can't get off. The second reason to scuff is to set up a physical bond for the new primer and paint to adhere to. You want to give the old paint some tooth so the new sticks better. Basically what you're looking for is a good, solid foundation of existing paint that is stable and still strongly bonded to the car. Many times an original factory paint job, even after decades will meet these criteria.
Before you start painting, it is a good idea to keep an eye on the weather for rain or snow. You don't want to start painting only to stop abruptly because of the weather. Fortunately, you can always get your primer tinted for free. Getting your primer colored the same as your paint will save you a coat of paint. Of course, I always recommend doing a minimum of 2 coats of paint so that your finish sheen looks consistent. To personalize your colors is to know your Season. We use the Seasons as a way to describe which colors look best on you based on eye and hair color and skin tone. To determine your Season, Color Me Beautiful moves you through a two-step process. First, you will learn Warm and Cool. Second, you learn whether you are Light or Deep. Once you have completed these two steps you are there. Hair colors come in categories of : Temporary, demi permanent, semi permanent, permanent. Each color line has recommendations on the categories and of uses of their particular types of hair colors. Each line has color enhancers, color glosses and so on. I recommend you have your stylist or colorist educate you on the types she or he will be using on your hair and why. This will help you when choosing shampoos and conditions that will help maintain your hair color between coloring services.