Yes, all you do is cross your arms over your chest with each hand holding the opposite shoulder…like you’re giving yourself a big hug.
And may I say…I’m very inspired by a young person being willing and KNOWING that it is a good thing to abstain from communion like this! It should a STRONG spiritual life within you in that you relize the seriousnes, you understand your state of spiritual being, AND that you are willing to show some humility in front of your priest and school friends…that’s very powerful!
I remember I would shrink in doing this many times myself because I was full of pride and a coward…later, I realized it was an actu that could actually be an awsome example to everyone around me! We catholics are soooo quick to recieve communion and sooo slow to realize we have to have a responsibility and respect for so great a gift from God!
I think God will be very pleased with you!
Michael