This is how I did mine. If directions are a little hard to understand; tell me cause its been a real long day and I'm tired.

1. Clean Wheels really well w/ a degreaser and sponge. Use a brush to scrub harder if necessary.
2. Get dish soap like Dawn. Put some in a bucket (just a little) and fill the bucket w/ water.
3. Wet your rim down nice w/ some water and then take your sandpaper (600-1000 wet/dry grit) and stick it in the bucket and start sanding it.
4. When done doing that, use 1500 wet/dry grit if ya want to. I did. Prepping is always the major key to getting a job done well.
5. Dry the wheel and then let the wheel air-dry for a while. Put some Rubbing Alcohol on a towel and rub it into the rim. It takes out all the oils on it. By now, your rim should be looking real funky due to all the sanding/and stuff.
6. Mask your tire w/ index cards. I made like a little shield with them by putting them in between the tire and rim. They stuck in nicely. I put some paper down behind the cards on the tiresjust in case though.
7. Shake the can for a good 3-5 minutes. Spray around 4-5 light coats and let 15-30 minutes of drying in between coats. If any paint drips out of the can and onto the rim, this is what I did. It helped a lot and made the little drip mark not noticable at all. You take a cup and spray some paint in it. Take a paint brush and stick one corner of the bristles in the paint. Rub it on the mark on the rim and then take the other DRY side of the paintbrush to blend it. Hope when you do your next coat that it doesnt happen again and try to clean the nozzle and shake the can a lot just after spraying even 1/4 of 1 full coat to get the paint going. Let the rim dry for 1-3 hours.
8. Spray 4-5 coats of clear coat on each rim waiting 15-30 minutes in between coats. After, let it dry again for a good 2 hours or longer and vuala! Nice rims. Mine in sig (graphite color)

P.S. - I used 2 cans of paint, 1 of clear. Good luck and hope these directions help.