This is the first image I ever took of a defect during a home inspection. It's of the downspout at the rear of my own house (no I didn't fix it like the inspector told me to). It has been an interesting learning experience and has been fun and stressful the entire time.
It's now been almost 2 years since that picture was taken and I thought I would say something about the process so that a new inspector that is in his backyard taking a picture of his first defect will have something to go on.
First thing I can say is study. A lot. No matter how much you think you already know, it's not enough. Get training early on and it will make the process easier.
Secondly start doing inspections of all your friend's and family's houses. Like full inspections with reports. I thought I would be fine with the reporting side of things but it is far more involved than you think.
Thirdly don't listen to all the yahoos on the forums and facebook pages that tell you that to become a home inspector you have to be in construction for 36 years and train with a master inspector for another 2 years.