Not a mistake to put this up. I get the feeling the whole point of this place is for people to share what they are trying to do!
The song has some interesting chords, some remind me of Rachmaninoff! and the arrangement is pretty together.
I'm not a good enough vocalist to criticise, but I can tell you might want to take some of the huuuuuuuge leaps out of the melody line. Too large are the interval jumps, they would make even a great singer nervous. If you are in love with the melody you've got here, then sing it twelve times and select the best bits and cobble it all together (a.k.a. "comping") . . . then do it all again for the double track. Add reverb to taste. Voila!
But I think the melody line could stand some revising to get rid of the leaps across the Grand Canyon of intervals.
nice job, thanks for the share!
-Tom