The first change I made was to include an App store icon to make make it obvious I was promoting an app, this was an oversight by me and should have been included pre-crit. The stroke outlining the words that scroll through was also removed so that the final company logo and tagline stood out more clearly. The final change was a simple spelling mistake in the word 'Shepherd', something I didn't notice until submission day and wasn't picked up by anyone during the crit.
Here is how my promo looked once these changes were applied: