I used Barry M - Cyan Blue (below) and Rio nail art pen in White (1109)
(Sorry I couldnt find a picture of the Rio nail pen I used.
It comes in a set and can be bought from Argos for about £24.99)
I first gave me nails 2 coats of the Cyan Blue. You can always use 1 coat, but I find 2 coats give a brighter look and seem to last that little bit longer. (which is always a bonus!) I then applied white dots using the Rio pen into rows over the blue. Normally I add the dots randomly, but it I find that having a structure made the nails look more professional. I have to admit I forgot to put any undercoat or top coat on. (slaps wrists) Try to always remember to put an undercoat on, as this stops any polish staining your nails. I once painted my nails yellow, again without an undercoat (slaps wrists again) and after countless hours of trying to remove the polish, it left a hint of dirty yellow - which was not pretty.
I love the results and have had many compliments about the cute design.