I've found myself stuck in far too many presentation classes so while I don't necessarily make eye contact, I do this "engage the audience" look at her face once in a while. I usually last as long as about 0.000003 seconds and then I'm all "yep moving on...in this slide here...".
Making this fake eye contact also, in my crazy land logic means I'm completely ok and I'm only here because I'm otherwise bored...I don't have real problems, it's all totally manageable and MY WEEK WAS FINE.

That's probably not what your aim should be lol