While the "Why I should be chosen" section of your application may be a bit on the shorter side, it is only about 15 words below what is recommended so I don't see that as much of an issue given positives of the applicant. The other 2 sections don't need to be the longest or most detailed (though of course it would be good) so I don't see much of an issue with them. You have included what it is required for the most part so I would consider the application adequate.
I personally see no reason to deny you. You're kind, active and you know the commands well due to your experience on both TTT and Deathrun. I believe the positives heavily outweigh the the shorter application
Good luck!