Not quite step by step but...
There should be 2 control arms attached to the strut. On the top arm, there are a couple bolts. Un-bolt the bolts, and move the arm. This makes the tire go in and out.
I would say more... but I REALLY have to disagree with you doing it yourself. Take it to a shop, it shouldn't be more than $20, and they have machines to tell the camber down to the hundredth of a degree. My camber is at -2.4 degrees, with the maximum positive adjustment I can get stock. Specs are like -1.9 degrees. If I wanna correct that, I need a camber correction kit, like the one from
http://www.pdm-racing.com
I just went through a HUGE bad ordeal with my camber. Besides, Nissan camber is funny looking. Visually, I think the camber is WAY off, but according to 2 different machines, they are perfect, 'cept that one.
-Jeff