The Journey Home Beautiful piece. Like a previous reviewer, I immediately thought of Pachelbel's Cannon, but that isn't a bad thing. Countless people have used similar progressions, myself included. And you put some nice variations on it.
What I really like about this piece is the clear sense of direction. The piece begins with whole notes and gradually introduces harmonic and rhythmic layers. You have a catchy melody play shortly after a minute in. You create contrast around 1:50 by thinning out the texture, and that helps transition to the next section.
Speaking of which, my favorite aspect of this piece is the descending chromatic harmony starting around 2:03. Lots of nice borrowed chords there. I think a gentle cymbal roll would have helped the transition into 2:15. I didn't like the leading tone in the bass at 2:27 because it clashed with the underlying harmony. The ending felt abrupt. Did you consider holding out those last notes longer?
What I see is that you've got a great instinct and sense of musical flow. Sure, there are a few little things that could be tightened up, but you've done very well with a limited tool set. I would love to hear you make music with the something like the samples in Native Instruments Komplete 9.
Beautiful piece. I imagine that your wife is proud.