I started on the seat bottom of the e9's drivers seat. The cleaning alone helped a ton.
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Nick Wood, on Flickr
There were some bad creases and small tears so I played with some filler I had from the kit I used on my M3 seats. Put a couple light coats of the filler on, dried it with the heat gun and sanded smooth. After that I put a few coats of dye on. I am pretty happy with the results.
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Nick Wood, on Flickr
After that, I started on the seat back and the bolster damage. This is going to take a lot more filler and sanding. I am not sure that I can make this passable, but our interior guy said he could replace the panel and I could dye it to match. Since that is possible I figured Id give it a shot.
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Nick Wood, on Flickr