Dear Hiring Manager,
I am an IT professional with 15+ years of experience & would love to get this done for you. Don't let my inexperience on the Freelancer platform fool you--I have plenty of development experience! I'm just now beginning to leverage that experience in a freelancing capacity.
I've been involved in many areas of IT, but front end Web development is my primary focus now. I'm unique in that I have a very good sense of design to match my technical ability which serves me well when doing this type of work. I have extensive experience with the Web technologies pertinent to this task--namely, HTML5 & CSS3, & JavaScript. For these reasons, I am certain I can create the Gmail plugin you are looking for to your 100% satisfaction.
Thank you for taking the time to review my qualifications. If you allow me this opportunity to work for you, I'll be sure to impress you with my attention to detail & quick delivery time.
Jonathan