Welcome to Cute.
Sharing designs is against the rules - see 'terms and conditions' link at the bottom of the page -, but there are a number of ways to get your mised letter.
1. wait till the alphabet is completed, then vote for the missing letter
2. buy a single missed one at $1 each - minimum order is $5
3. buy a membership and download everything - all alphabets and all other designs - and everything new that's offered uring the 6 months of membership. That's well worth the money!