Lol fine but you did say support with constuctive criticism>
OK yeah your singing sucked in parts, especially the higher notes you tried to hit.
Guitar playing wasn't that bad I think I heard a few slip ups but very few.
Chorous needs more passion and louder, was there a chorus bit because it was mostly all the same pitch? if not then add one in and make it like I said before louder and more passion also with the intoduction of a different instrument as well with the guitar, yeah I know its just you on your own, but you could pre record something and then play it alongside when you get to the chorus.
This song kind of reminded me of 'iris' by the 'goo goo dols' maybe listen to that and see if there's anything in it that they do that you like
Hope that wasn't too honest :)