How can improve my britsh accent?
Just listen to other people speak it on YouTube. I personally like the Scottish and Russian accents.
By watching a lot of British television or by watching British people getting interviewed.
Why do you need to improve it? There is kind of no way unless you try to speak even more british
Watch Doctor Who and Sherlock
which British accent do you want? there are many
watch Gosford Park
Go to England for a few months...