@fulfillingsoul, that sounded very nice, with very good intonation.  In terms of improvement, watch your video and notice that you play mostly with the lower half of your bow and notice that you don't ever seem to use the upper 1/3.  You paid for the whole bow, don't waste any of it.  

You might profit from practicing long bow strokes that go from frog to tip and back again.  Also practice songs you know using only the upper half of the bow.  This is probably why you were using more shoulder, because once the arm is fully collapsed somewhere in the lower third of the bow, the shoulder must move in order to go any further toward the frog.  Therefore, it might be that it "seems" like your using to much shoulder, but the reality is that it just an side-effect of playing a lot of notes on the lower third of the bow.