Pencil case? - Check
Eraser? - Check
Ruler? - Definitely!
A really simple and very easy back to school design.
(for a more subtle design you could simply paint onto your natural nail colour - after you have used a good base coat of course!)
Once the yellow has dried take your striper and start creating the measurements on your fingers.
Place a larger black stripe in the center of your nail. About 3/4 of the way down.
Then create a series of smaller lines either side. Depending on the size of your nail I would suggest three or four.
When you are ready and with a steady hand, use your striper to number your fingers from left to right (little finger = 1, thumb = 5)
And finally seal with a good top coat.