Nice job for a first timer, Mike_!...Keep at it and you will get better.
Thanks Sir Harry - I should have done a later photo, as all the red patches went away.
Here's what I look like from behind.

Not a great shot, but the best I could find.
This is me, just shaved, 1st time shaving with and against the grain.
I need to shave my head more often I think.

Nice job for a first timer, Mike_!...Keep at it and you will get better.
Following on from this post, I've had another go today. I should really shave it more often, but time isn't always easy.
I was a lot quicker at shaving and I have much less red patches on the back of my head too, which is good, hopefully I will improve!
Well, if you guys REALLY want to see my back side...
This is me, just shaved, 1st time shaving with and against the grain.
I need to shave my head more often I think.

Nice job for a first timer, Mike_!...Keep at it and you will get better.
Following on from this post, I've had another go today. I should really shave it more often, but time isn't always easy.
I was a lot quicker at shaving and I have much less red patches on the back of my head too, which is good, hopefully I will improve!
Those red bumps are exactly the reason why I hardly shave against the grain in the back. It's not worth the risk to me just to get it baby butt smooth.

Here's mine. Looks kind of like the Sahara desert.

Here's mine. Looks kind of like the Sahara desert. 
Looks good to me.....certainly better than the one of you with hair, right?