Second the have you tried cleaning his nose off. Its possible it's just dirt. If its not dirt and you're concerned, you can use aquaphor or vaseline on his nose to put some moisture back on that spot.
As for the leg hiking thing... he's only 6-7 months old right? He may start to hike that leg up there soon or he may be one of those boys who sticks with the girly pee stance lol. Our male didn't start hiking his leg until he saw other males doing it. Until that point he peed liked a girl. He was about a a year old before it started and he was consistent about it.
The more people I meet and talk to,the more I love my dogs and their intelligence.
Zena GSD 6/1/03
Shasta GSD 5/5/10
"Dax" Thor z vom Weberhaus GSD 3/18/2013
Riley GSD/BC 1/10/05-2/1/2013