Okay. I will do some more French polish. Less linseed oil.
I used clean t-shirt fabric but it was a bit ribby; this, I think, is what caused the streaks.
BTW the boot wax recommendation came from elsewhere. I don't have car wax, and there was a discussion about carnuba wax being the important ingredient. Also I used shoe/boot polish on my 99k and it looked fabulous. Go figure. I think my problems are pre-waxing anyhow...