Ok, so you're beginning down the left path. You're not sure the full extent of your abilities, and you happened to hear of blood magick. So what is this stuff?
Blood magick is just that, magick utilizing the blood. It is typically used to empower a spell cast. While blood is easily accessible, I reccomend not using it unless absolutely necessary. For example, say the spell has you using lavender, you could potentially use blood as an alternative while making a more powerful casting.
Some people see blood magick as entirely dark. Thats not always the case, unless you see it as that. Blood magick can be used by both sides of the spectrum.
So whats the best way to do blood magick? It's your choice. You could use a needle, or a diabetic needle. It varies to each person. For example I would prefer to use a razor to create a cut just deep enough for blood. Another person might prick their finger with a sewing needle. No way is the absolute right way.
A warning, though, about blood magick, This is very strong and while it may almost always succeed, unless you are okay with it backfiring sometimes (if its darkness you are working with, of course), think again before using it.
Happy casting!
Darkness will always exist [glow=black[/So why not utilize it?]
) 
When you speak on an introduction to anything, you have to assume that there are readers who are putting their trust in your insight, and so "If the coach says it's okay, then I guess we can do it too." 
