If you want to improve the strokes of English writing then I'd suggest that visit some of the scripts by some personalities. Observe which one's easier and closer for you to follow. Then following the strokes from that script, write a paragraph daily with pencil for about a week, then with ink pen for the next week and then with ball point in third week. In fourth week, repeat this with pencil, ink pen and ball point altogether. After a month, you'll be able to write anything with any medium (either with pencil, ink pen or ball point) in your chosen style of writing.

Goodluck!