Dude that was awesome, and you are a great guitar player. You also have a great voice for this style of music, you absolutely nailed most of those falsetto parts. You did very well for a first solo try, much better than I could ever do.
Ed Sheeran is an awesome song writer, and most of his songs are tough to sing, lol, he doesn't even record all of the songs he writes. They are all pretty deep though.
Good luck in the contest, It is one of the better entries that I have seen.