Cut out approximately the amount of foil you will be using. Try not to handle it too much with your fingertips, as you will leave oils or moisture from your fingertips on the foil. This can mess up the success of your foil transfer.
With one firm press, place your foil unto the desired area. Do not continuously press it on the same area, or you will cause it to crackle. Unless that is the look you are going for.
Finish the design with a thick viscosity top coat
A slightly thicker seal will ensure your foil does not become exposed should your thin topcoat wear down. Cure it.
Woohoo! I hope after these steps you feel like a total Foil Transfer Master.