I decided to try doing a jelly sandwich with OPI Got a Date To-Knight and Lippmann Happy Birthday. The OPI is a light pink jelly polish. I used 2 coats of it, then 1 coat of Happy Birthday, and then 1 coat of the OPI on top. I think it came out really cool! It reminds me of cupcakes with sprinkles or something.
Btw, I'm really sorry for the strange looking hand...I had to have my sister take a picture of my right hand because my nails got messed up on my left hand (and I'm a righty, so it was too hard for me to take the picture myself).