Don't keep your chin next to your chest. You want to be looking down a line at about a 45 degree angle with the surface of the water ahead of you. Keep a kick cadence of about 3 kicks per stroke (one arm) / 6 kicks per stroke cycle (one stroke each arm). Remember that freestyle (or "crawl") stroke is swum mostly on your side - you'll be on your left side as you stroke with your left arm and on your right side as you stroke with your right arm. Don't rotate your head unless you're taking a breath. I think those are the most important tips I can give. It's hard without actually being there to really help out. The best thing would be to find a friend or acquaintance who can give you some tips in real-time. Hope this helps!
Mark