I picked a cute design from the online silhouette store, making sure it had nice clean lines that would still look good when resized to fit my phone case. I also cut out an "L" with a pretty font.
The vinyl was really easy to remove from the paper and stick to the phone case, I even had to shift it once and it lifted easily and reapplied well.
I am super happy with the way it turned out! So far the decals are staying put, but even if they do begin to lift over time I figure I will just cut out something new!