well ehm,

i was editing my profile some minutes ago,
but i can't find where to upload a picture!
someone can explain me clear?

Well ill try to help you

Go to Communty then pick Profile. You'll see your entire profile (duh)
Then go down and under "My status" you have "edit profile" and "change profile picture" and more. Change profile picture is the one you need. Then you press Kies bestand (Choose file) you go to where your picture is saved on your pc. You pick it and then press Upload and done.

Also consider the size. Good luck and I hope it helped

ty bro i'll figer it out