Remember the 5 Ps: proper preparation prevents poor performance.
Carefully read the entire application and make sure you understand what is asked of you.
Go to your faculty adviser, mentor or your parents if you have any questions about anything in the application process.
Read through the grant application package once more before sending it off.
Use plain English. Flowery language, full of unnecessary adjectives and lengthy parenthetical phrases, does not make your readers think you are more intelligent.
Avoid jargon or slang. Catchy phrases and trendy language should be used very sparingly if at all.
Make sure your proposal is well organized and easy to follow.
Avoid fancy fonts. Let your ideas and words speak for you.
Use logical, well thought out arguments to make your point.
If you are asked to submit a budget, be careful to keep it within the limits set by the funder.
Stay within the page limits set by the funder.
Give funders what they ask for. When answering questions, use the same terminology used by the funder.
Proofread your proposal to be certain that there are no grammatical or typographical errors. It is always a good idea to have someone else read your proposal before sending it off to be sure you have not overlooked any mistakes.