If you have followed the steps, the last round of blocking should look like this. The guide coat is gone and there are no bare spots showing. Now just repeat these steps on every body panel and you will be ready for paint. If you are planning on a single stage paint job then just spray some sealer over the 220'd finish. If you are going with a two stage (basecoat/clearcoat) then you will want to remove the 220 scratches with some 400 and then remove the 400 scratches with 500. Then you will be ready for sealer and then your basecoat.