The more you apply - the more chances you have! But be sure they are all done well.
In a sense, the process is like applying for a job: to beat the odds, one has to knock on many doors. However, it is better to apply well for one award than to rush off haphazard paperwork for several scholarships.
The first conditions to meet are clarity and neatness. A typed and thoroughly proofread application is essential. Judges must be able to read and understand the information easily; this information, while being truthful and straightforward, must allow the judges to see the applicant at his or her best.