All I can really say is: a bigger brush is your friend here. Everyone has their own preferences as brushes go, but as things go, I tend to find a hard round with opacity set to pen pressure and flow at about 50% tends to do the lion's share on my paintings.
gavinmacdesign - I can totally relate to that. If I had an idea that didn't completely follow the brief, I'd just put it aside and work on it later. The best part about these challenges is that you get so many cool ideas which potentially could end up being really sweet pieces of art. About the torso - Yeah, I kind of imagined it to be able to close itself, but I forgot to add slime to the edges to emphasise that.
Si_Swe - Thanks for the tough love. I appreciate it. It feels good to know what I need to work. I'll do my best to apply that into the next creature challenge - and everything else.
aburnier - Damn! I don't remember my dreams, so I guess that's my problem.
I'll try to give my monsters more OOHMPF next time.