Had a go at welding on both saturday and sunday. The drive roller on the wire feeder was too big for 0.6mm so I had to use the 0.9mm wire. I practiced on some old front fenders (not mustang ones haha) and it took a fair while to get the hang of it. I think that wire size didn't help... I didn't try welding on the mustang and I won't until I can use the smaller wire... Don't want to go blowing holes in it.
Decided I'd try out the MIG on some thicker steel and it was muuuuccchhh easier to use. I ended up making a seat out of an old car back seat (from a honda legend)
The frame:
and with the cushions on it: