I think your application is pretty alright apart from the "Why I should be promoted" this section doesn't even reach the 75 word recommended amount. Now I appreciate it is only a recommendation to write 75 words, however this part makes it look rushed and as if you weren't too sure what to say.
Your activity is pretty good so keep that up!
I also know you are trusted as you have been given LT on Murder so thats good.
Overall I think just keep doing what you're doing and maybe add a bit more to that last section to prove that you well and truly are ready for a promotion.
Best of luck!
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