This one’s kind of a stretch as far as SW is concerned, but there is a short ROTJ segment and a bit if ESB scattered here and there, and it does showcase a lot of the techniques used in the OT so I figured I’d post it here anyway.
Thanks to darth-gary for sending me the link to this video.

Special Effects - 1984 documentary on SFX
https://www.youtube.com/watch?v=hp1Y_kVL6a0 - from the Cinema Garmonbozia YouTube channel (53 mins long)

Skip to 21:15 for the segment on the use of steadicams on the ROTJ speeder chase scene, and at 34:10 they discuss sound effects and foley, briefly using ESB as an example.

I couldn’t find any other info about this documentary, not even an IMDB page, so if you know anything else about this, please let me know and I’ll update this post.