Owch :O Had no idea palette knives could get sharpened from use o_O Hope it doesn't take too long to heal up!
Is mindfulness kind of like concentration then or are they supposed to be two different things? Either way seems like being mindful/concentrating on what you're doing especially when dealing with sharp tools is probably a good idea :)
Well when I say, "sharp", you wouldn't be able to shave with them, but their edge is certainly better than a table knife. I heal quite speedily. No dramas. =)
Mindfulness is not the complete exclusion of everything for one. You are present in what you are doing, but your thoughts and attention are not wandering to other things.