How to paint and distress a piece of furniture to make the paint aged

use 2-3 coats of chalk paint. When dry sand the edges. Then is Min was paste to seal.

http://www.diynetwork.com/how-to/make-and-decorate/decorating/how-to-distress-furniture

When you say aged, are you talking about distressed (where the edges are sanded to reveal underlying wood) or the crackled look to the paint?

I paint pallet, and to age the wood, I just paint and then use the full side of a knife and scrape off s of the paint. I also use pickling paint to get an antiquish look

Why don't you try the chalk paints? Annie Sloan makes a great one! Choose your colors and go with it. One example would be to paint it a soft blue, and then rub over that with a soft white. There are so many beautiful options with chalk paint. There is a chalk paint group for Annie Sloan on FB; you could get many ideas there, AND help if you needed it.

water down the paint to do a wash effect