There's an article on our website that might help with your shy child. Here's how it begins:
"Each child comes into the world with a different set of potential characteristics. As parents, our challenge is to find ways to work with, and celebrate, the people our children are. Some children are slow to warm to others. If your child acts shy, he needs you to lovingly accept and validate him, just the way he is, while at the same time warmly encouraging him, indicating that things are actually safer than he can tell."
If you'd like to read more, I'll attach the link below.
Just remember that your shy child is very lucky to have you thinking about this issue and trying to help. Your awareness and sensitivity will go a long way to building the confidence your child needs.
Hi the way i got my child to become more social was to get her to go to the local clubs and groups like i sent her to rainbows and she loves it!!! and has met alot of new friends and has came out of her shell alot!!