Don't worry about being a fraction out. A click will always be more precise than a treat or you yabbering away with verbal praise. Don't worry about the dog trying to work things out, that's what you want - work that little dogs brain, get him trying to work out what you want, what will make you click -he'll think he's training you!
Sit on the sofa with a clicker and some delicious treats. Do nothing. If he looks at you click and treat. Looks at you again click and treat. Do that a while. Now just click and treat for a look held for at least a few seconds. Keep going. Now you can name the behaviour - if he looks, say 'watch' then click and treat. Say watch, he looks you click and treat. Your done - you say watch, he looks at you. You think "I've trained my dog to look at me when I say watch". Dog thinks "wow I did well if I look when she says watch it makes her click and treat". Dog, tired from thinking so much about how to make you click, settles down for a well deserved rest.