Develop a positive attitude. Find something good in everything your child writes. Remember, the first goal is to make writing a pleasurable activity. It's OK to draw, doodle, or act out ideas before formal writing. You would be surprised how these informal activities can grow into more complete sentences, paragraphs and finished works.
Children benefit from lots of practice writing.
Find reasons to help them use this skill. Cards, letters, notes, lists, diaries, etc., provide nice opportunities to do it every day. Allow your child to choose their own topics as much as possible. This promotes increased interest. Keep a home journal with your children which details ongoing activities, plans, interesting events and special occasions.