This was the final look:
All the nail-polishes that we used had thin tipped brushes. This is what I did:
Step 1: Draw four white lines on the tips of your nails and use another color to draw lines in between the white lines (here I used yellow).
Step 2: Draw an upside down heart on the other half of your nail.
Step 3: outline the heart with a silver nail-polish and shape it so the heart looks like a real cup-cake.
I then just drew little sprinkles on the cupcake and put some glitter on them.
Let me know if you liked how the nails came out looking. I think they look really cute!