The Oldsmobile Connection

[dex16]

I've read this forum on the subject of painting. but here is my situation.
I have 2000 olds intrigue; with some pot marks from road dirt and such. I decided to to a little touch up painting today. Went to my local auto store. We looked up the paint code under the trunk, got the "factory match paint" and then I went to work.

My steps.
1. Washed the car
2. Lightly sanded the surface around the touch up area
3. Masked off area, painted area.
4. Let dry, lightly sanded again
5. put second coat of paint on
6. Let dry
7. Removed masking tape

My problem now is that the area I painted looks black against the older paint on the car. I tried some polishing compound to even out the color or the edges of where I had the tape but there is still a noticable differece.

My question. Do I keep working with the polishing compound? Do I move to a more abrasive substance such as rubbing compound? Do I send my car off to a auto shop and have them paint the whole thing?

Thanks for you suggestions.