I can’t help you there mate (I’m very poor/simple on the on the design and technical front) - but these dvd covers for the Q2 Prequel Edits may be of interest/help to you?:-
https://ifdb.fanedit.org/fall-of-the-jedi-episode-i-the-phantom-menace/
https://ifdb.fanedit.org/fall-of-the-jedi-episode-ii-attack-of-the-clones/
https://ifdb.fanedit.org/fall-of-the-jedi-episode-iii-revenge-of-the-sith/
^ just click the ‘Artwork’ tab on each linked page above for a choice of 2/3 covers for each Episode to download.
Yeah, I saw those, looking for something closer to normal SW covers.
This post also has some of the very talented ‘chyron8472’ Q2 Prequel Edit covers (a bit more traditional in style):-
http://originaltrilogy.com/post/id/895793
and
http://originaltrilogy.com/topic/Blu-Ray-and-other-HD-box-size-STAR-WARS-covers/id/11843/page/26 - and scroll down for another set by the poster ‘chyron8472’ (the first 3 covers are for the Q2 ‘Fall Of The Jedi’ Edits).