Make sure your addresses to the child are clear and concise. Check meaning regularly as any small missed detail can confuse the child completely. If you want your child to make choices, then make them clear; offer two or three choices in an either/or situation. Make sure that you follow through any choices made to ensure continuity.
Many Aspergers children will dislike eye contact. Remember that this is not personal and do not force eye contact as it will make your child uncomfortable and unable to concentrate on the words spoken. If your child has communication difficulties, try using the PECs system for pictorial communication. Above all, read advice and listen to experts, but remember you know your child best and they will respond to what suits them the best.