There are some obvious reasons I know it would be declined: Not following the guidelines, any sort of misconduct ( which could lead to more trouble), poor writing, poor reference letters etc. I re-read all my statements so many times, and I have also had other people proof-read. I have found a few grammatical errors after submitting the app. They might not stand out, but that depends on the reader. I am 100% aware that grammatical errors are bad, and I tried to make sure there were not any. =( .... Does it depend on the reader about how many grammatical errors are too many? I know some do think one is too many. On a more realistic note: I am aware of my chances of winning the Fellowship. I am instead looking at the positives. There are other fellowships to apply to in the future. Also, working through this application at least showed my advisor that I have many strengths as a researcher and that I have worked hard. I guess that's pretty important ( if not more).