[Suicide Junkie]

The zips I saw from you up to this point did not include the rings, comet, and nebulae.

However, browsing through the new bits of the one you just posted there are three things I note:
1) the comet has a bright edge to it. The way it works in SE4, that should be pure black instead so that the masking will work.
2) Many of the nebulae are already included elsewhere.
3) Saturn in already included. And ISTM that the one in the zip there is a tad squished from the rescaling.