50th Birthday Card

My sister is turning 50 this year.  I was designing a card for her, when my husband said to make it simple - here is his idea.

Front of the card:

Inside the card:

The card is 5.5 x 4.25,  The base was embossed with the Cuttlebug Happy Birthday embossing folder.  The numbers on the front are from Lyrical Letters Cricut cartridge, cut at 2.5".  The numbers on the inside of the card are also from Lyrical Letters cut at .75", and welded.  For the balloon, I used Sookwang double sided tape over white card stock, then cut using Stretch Your Imagination Cricut cartridge, 2.5".  Red glitter was then added.