2cents? They've given you hundreds worth!

you're probably just inadvertantly looking at their eyes. Plus, many people look great on the bag and mitts, but it all goes to shit when they spar. Why? Becasue getting hit is a shock to the system so you're not comfortable with the idea of trading a punch for a punch. You're looking to HIT but you're expecting NOT to get hit. And when you do get hit, it's "HOLY SHIT, where did THAT come from? I didn't even see it!" As soon as you come to grips with the idea theat you will get hit and you become comfortable GETTING hit and realize that you're not going to get hurt like you think you will, seeing them will become easier. That's when you'll loosen up, gain more confidence and start becoming a slicker boxer who hits better and is harder TO hit.