Hi and welcome to the forum

Congratulations on taking the first steps toward creating your virtual assistance business!
I would have to say that one of the 'keys' to success as a virtual assistant is to truly invest in the development of your own business before expecting clients to pay you to help them with theirs. If you provide a professional persona (and can back it up with quality products and services) you'll find that your clients will do much of your marketing FOR you, via referrals.
Use the information on the boards to your advantage - there is a lot that goes into creating a VA business, but everything you need to do that is right here.
Good luck to you!