I used sellotape and a pair of pinking shears to cut the tape and then mask of half of the nail so I could paint half in another colour. You could do the pattern to all the nails but I just decided to do it on my ring finger and thumb.
These were the nail varnishes I used
Tanya Burr nail varnish - Little Duck
No7 Stay perfect nail colour - Lucky Lilac
George nail strengthener and top coat - Clear