I Am Not Very Good At Flirting

I think you need to be confident enough in some case's to back it up and need the ability to be a smooth talker. which some of the time I am not. I have tried flirting tried to act confident but soon as some one would what I thought was possibly flirting back I seriously ran scared I shit myself seriously I have made a mess of things due to trying to act confident but wasn't .I am just not good at flirting .I know flirting doesn't always have to be serious and can just be harmless fun but however I am not good at flirting that's just me .others may find it easy but I don't.