Tips for cinder an bonfire toffee?

[browniebear]

I'm going to try make my own this weekend but never tried before so has anyone got any tip so I don't completely bugger it up?
It looks simple enough from the recipe's and my sugar thermometer arrived today but still I'm not very confident I can pull it off first time

Make sure you line the tin so that it will come out! I used clingfilm when I made cinder toffee, but silicone baking trays are probably better!