All you will need is:
Grease proof paper,scissors and canola / non-stick cooking spray.
Then place the opened tin over the top of the paper. Push the ring over the base and close the latch.
Next turn the tin over, and cut and trim around the base edge of the circle. (Remember, it also doesn’t have to look ‘neat and tidy’).
Next cut strips of crease proof paper, spray the inside walls with your non stick oil spray and stick your strips around the sides, you can also join them with smaller pieces if you don’t wish to waste any left over pieces of the paper.
I told you this was easy!