Hello and welcome to Elliquiy.
As the Rules say: "You may link to your site in your signature as long as: 1) The site links back to us; 2) It is not a pay site; and 3) It is not a referral or affiliate link."
You can paste the link to your signature. That way everyone who views your profile will see it and it will also get attached to your posts.
I'd like to point out, though, that approval is never guaranteed for anyone. Sometimes it just doesn't happen, so it's always "If I'm approved."
Best of luck with your intro.