Identify your prey. Do not be scairt if the lizard opens his mouth to show you his teeths. This is a trick.
Lock in on your target with your laser eyes. You must use strong concentration here.
Inch slowly closer....
At this point, you may attempt a one-paw lizard grab.
If he escapes, be ready to chase!
You can try negotiating with the lizard. This does not usually work, because lizards are not very smart. Or maybe they just have poor hearing.
Try for the lizard-grab again, only this time you can try to corner him against a wall.
You should not be surprised if the lizard tries something sneaky like running under a table and chairs.
I have found that, many times, it helps to understand things if you tilt your head left and right and look very quizzical.