14-. Move the Layer as you wish until you get the result you want.
15-. Save a Scheme (optional)
And click on "process" to apply all the W. Process to the all image.
16-.Save it in Tiff mode and you are ready for Photo shop.
17-.Ok On the step 15 I do save the "process scheme" for the next reason, Did you ever notice than the best stacked and processed area it is around the same place than you originally put the "alignment” Feature" on the step 4, well that is because Registax move the atmospheric distortions patterns on the raw images and put that same distortionated area in the same place than the others, but the around areas are to much out of place to be correctly aligned out of the "alignment feature"
Well if you repeat all these steps but you select different "alignments features" until you get a set of Better "alignment features" images and every time you reach the step 14 and open the Scheme to use the exactly the same layers properties you can cut and paste those perfect (and small) areas using Photoshop and the "feather" to produce an almost diffracted limited sun image.
Colorized