How do I blow up a template I printed from here so that I can use it on a 1/4 sheet cake? Thanks for any help, much needed for a baby shower "Onesie" cake I have to have done by Friday.

On most printers they have options to blow up your picture to the size you want it at. I do it all the time.

If you have access to a photocopier, you can use the zoom function to enlarge.