Here's a little communication tip for Parents of kids on Spectrum

1) get your child's attention (make physical contact if possible);
2) paint a picture--simple and clear;
3) get to your point, FAST! (15-30 seconds--no more)
4) Only ask for one thing at a time (until you've learned how to communicate more);
4) Then ask the question, "Do you SEE what I mean?"
5) Good luck!

ps: If your child is looking down while you are speaking, he is probably EVALUATING what you are saying and deciding what it means to him. If, however, he is looking up while you're speaking (especially if you're painting that picture), there is a good chance he is visualizing what you are saying.