So I'm a 5.0 player and my serve has always been my achilles heel. I've spent a lot of time practicing recently because I've had more time on my hands and it's a lot better in practice, I'm able to get a pretty decent kick, but when I play competitively it just breaks down. The more competitive the match the worse it gets. It's mostly a softball when I do try to swing out I start double faulting. I know I need to stay loose and all that but hate to double fault. I should add that my game overall is pretty defensive. I know there's a psychological component but I think my question is more what are 1 or 2 tips of things to do or think about in terms of form that might help me overcome this.