The guide is pretty good, I would include a reflection at the end something to think about in this way…
The reflection should stress how the boys or girls would conduct themselves in imitation of Jesus or Mary respectively.
The people serving at Mass should be ever thoughtful of their imitation of holiness and ideal. A boy should seek to imitate Christ in seeking to live life as a man in Sacrifice and submission, and a girl should seek to imitate Mary as the ultimate in humilty and abandonment of self will.
I saw nothing, (maybe I missed it) of the Priest being in the person of Christ and as such we also respect the office he is serving. I did not see any bowing toward the Priest after he bows to you, or acknowledging the Priest.
An Altar server is there to serve God, the Priest and the people, and to look how to best serve the Priest as He celebrates the Mass. All to often instead of looking at the Priest the servers look to their duties or at the people, awareness of service is very important.
Nice booklet, I just think a bit of spirituality might help focus it,