If I try too hard it doesn't work, but if I draw straight off without too much strain then I tend to like them more. I draw upside down, by the way it takes away your prejudices of what you think something looks like vs what it actually looks like.
So here are the originals in the interests of transparency and fun.
And again. The before and after of my brain. Anyway, this guy properly gave me the giggles for some reason, maybe its because he looks like he's been asked to take out his granny or something.