I prefer to speak English because German is not my mother tongue, but I can also speak German.
Limits:
Soft limits:
anal sex
face slapping
talking dirty.
Hard limits:
collar and lead/leash
deep throating
degradation
erotic photography ( of us together) (plus I'm only sending nudes after first meeting)
fisting
foot massage
foot/feet and everything to do with it.
gagging/choked by cock
humiliation
making home movies ( of us together)
verbal humiliation and degradation
Cum in the mouth (do not like the taste, and do not want it in my mouth)
Blood, needles etc. scars.
Urine and things like that.