I guess the fact you've asked the question proves you want to improve. So only you know the answer with regards to training, but I suspect the stock answer is to just climb some more. pick it up to 3 times a week and just climb and enjoy climbing, dont train specifically until you start to plateau.
**cut/paste from thread linked below**
I was in a simailar position earlier this year. I basically asked the same question and got the same answers:
ignore grades
work on your footwork
just keep climbing
I wasnt happy about the answers I wanted progress!
you will likely want the same or why else would you post up the question.
So now my grades have picked up. How?
I did the above ! edit : no shit sherlock
There's a lot of truth in the advice BUT the other thing I did was had a coaching session one to one with a good coach, it was a 3 hour session at a wall. The most useful thing about it was that he could see me climb and told me where I was weak and then gave me some training on how to improve these weaknesses and S L O W L Y they are improving.
The biggest thing I've learned is that getting better just takes time. There's no magic wand. there's no training plan that will guarentee you getting to 8a from 3+... it just takes time and practice.
The best advice I think is to keep doing it, keep practicing it, keep enjoying it. Lower your expectations.
**end cut/paste**
http://ukbouldering.com/board/index.php/topic,22578.0.html