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I'll say "Ditto" to all the positive comments - good writing, good energy, very nice harmonies. I would like to hear the lead vocal more out front. Try boosting the EQ around 8000hz or 12000hz. Maybe a little compression.

The guitar parts sound like they did not get to finish. Like you potted them down before the end of their phrase. I often find myself regenerating realtracks solos in a 1or 2 bar space, sometimes even less than a full bar, over and over until I get a solo that just fits the space I give it. Keep trying.

There is a very common chord change in gospel that goes from the IV major to the #iv diminished, then V7, then to the I. In C it would be

F/// | F#dim/// | G7/// | C///|

...there were a few spots in your melody that hinted at a chord change of this kind. Try it in BiaB and see if it does not fit.

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Flatfoot sez: Call me when 'Talent-in-a-Box' is ready to ship! -- [8{>

Got some tunes on You Tube:
http://www.youtube.com/user/flatfoot50
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http://jdwolfe0.wixsite.com/learnbiab