To improve anything you have to practice it. Simple as that. Write in your notebook and people will correct it and eventually you'll learn.

For improving your English conversation, sellect a native English speaking Language exchange partner, and start conversation on a daily basis . As far as "handwriting " is consern, first of all sellect an interesting book, and start "handwriting " the matter on a three line, handwriting practice copy. For a remarkable improvement you have to "handwrite" atleast eight to ten pages every day, then you will note that "practice makes a man perfect".