First off, if any of this is formated wrong, things I'm not supposed to say, or the wrong place to post, please let me know! For reference I'm a M helping out a F. The first thing is that she wants to be blind folded, which sounds fun, but does anybody know any tips or fun things to do while she is blindfolded? The second thing is she likes the idea of knives, which again I'm into, but kinda freaks me out. What are safety precautions for that? The third thing is she likes blood. Like I bite her lip and it's bleeding, small things like that. How am I supposed to do that just the right amount? Any tips on the previous questions or anything BDSM in general will help, as this is my first time. Thank you!