Painting with their own blood for real? Seriously? So what's next? Art made out of pieces of cadavers?
Well I've heard of a fictional book that was wrapped in human flesh and inked in blood, just a concept, guess I wasn't too surprised someone had already done something like this and actually use their own blood to create a painting.
Besides, if I remembered correctly blood is potential biohazard.
As a painter myself I'm not a fan of it, not only because it's disgusting but also because that's not what blood is for and I'd rather use paints then drain myself of what keeps me alive in the first place just in order to paint a all red picture. Especially when I have reds that have that exact shame color and shade.