I have been planning a jacket like this for a long time, but I'm not sure the timing is right to take part in the sewalong just now - I'll do my best though!
@BrendaP has made a beautiful patchwork jacket.
Actually I've made several!
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This one was 6" squares of denim from old jeans. I made five pieces of fabric as they did on GBSB. It is not quilted but is lined; bagging out method and the frogs are the only method of closure. Can't remember which pattern I used, it may have been a Franken pattern.
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This one is whole cloth (cotton poplin) but it is quilted and then lined. It might have been Burda 8949. Inspired by the jackets that Mary Berry was wearing a few years ago. It is quite thick for a short jacket - but I think I used high loft poly wadding! Machine made buttonholes and I recall difficulty in finding suitable buttons.
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This is Zambeezee from Pearl Red Moon. The pattern came with all the separate pieces. I then put the pattern pieces together to make a lining pattern. It's not quilted but I did coverstitch from the back using three needles and kept the middle needle in the ditch for a contrasting "top stitch" and then made a separate lining. I used a variety of silk scraps, some very well matured, all from my stash. The neckline on this pattern is very low. If I were to make it again I would completely re-draw the neckline. It features poorly made bound buttonholes.
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This one isn't a jacket, it's a cape/wearable quilt. Not quite square, the shoulders are sloped so when laid out flat, before adding a line of stitching each side to separate the 'sleeves' from the body, the front edges overlapped slightly. That meant joins in the backing fabric at the shoulder line. Machine crazy patchwork (a mix of stitch and flip and aplique) using all sorts of scraps including synthetics, a narrow zig-zag top stitch over the seams and then sandwiched and quilted using straight lines in random directions. It is bound; mitred corners at the bottom and curved at the neck. Three large press studs at the neck for fastening.