All you need are some white plates, a range of sharpie permanent markers in a range of colours and an oven to bake the plates in.
I bought some white plates from a charity shop, give them a wash and dry before you start.
I used pencil to sketch out a design on to the plates. Have some wet wipes/baby wipes handy to scrub out any pencil that shows up after you pen in your design.
Once you are happy with the design, bake them in the oven for 30 mins at gas mark 4 (180 Celsius, 350 Fahrenheit).
The finished result!
I'm not entirely happy with the final result, but I guess its not too bad for a first attempt...