When it comes time to write an appeal letter, you want to do your best to be personal. Write in a conversational tone. Keep your writing simple and easy to understand (this is NOT the time to use all the big, fancy words you know!) Tell a story about someone your organization has helped. Paint a picture for your reader of how your organization is ready to make a difference in the lives of many more if their support is given.
There are some great tips in a recent post at the Bad Language Blog. Here are a few of them: Write like you speak. Use short words and short sentences.
The bottom line is to keep it simple so that your reader can easily read and understand about your organization and the work you are doing.
Following this steps and writing a letter makes some sense,outline of the letter can done by reading this post,thanks for sharing this post with me