I use Keos. The only tip I can give you is practice, practice, practice. Try clipping in and out as much as you can stand whilst stationary leaning against a wall, then keep doing it whilst not looking down. It takes time, but it will become second nature eventually.
Point your foot down slightly and slide forward into the pedal before pressing down hard until it clicks. Try slackening off the tension to minimum until you get the hang of it.
I understand that Keos are not the easiest pedals to clip into, but they are very secure. (The SPD's on my tourer are infinitely easier to use, but I have on occasion pulled out of them).