The best way to improve your prounciation is to talk to as many Engish speakers as possible, ask them to help you correct your speech. Also spend as much time as possible listening to Native English speakers! also you might like to Look at the English phonics alphabet , not the letter names but the sounds and the rules on how sounds change when they are writen with other letters, ie ly is said as e! I disagree with Aaron Im afraid as bad pronuctiation can mean the differance between being understood or not!

i think you need not to improve your pronunciation, because we use a language to comunicate each other, and if others can understand your opinion, just pronunciate by yourself, haha~, it's your personality, right?