I made this card a couple times now after seeing it one like it on Pinterest. I had purchased a set of diecut numbers and wanted to use them and this was the perfect time. I was able to interchange the special number for both a 16th and a 75th birthday. The problem was, this card is impossible to photograph. My camera doesn't like the black on black but you get the idea. The top of the card if popped up for dimension (use black foam dots) and a couple jewels were added to bling it up. My friend made it in white and that worked well also.
I heat embossed the sentiment (after the fact). Make sure you do this step before you adhere the top of the card or you'll be forced to do it on another piece of paper and add it after.