They all look fluffy. Try to either draw less lines or after you draw tons of lines, draw a continuous nice line over the fluffy stuff (that's how I do). There are some proportion problems with your humans, but most importantly the face of the dude fighting that naga worm thingy is highly inexpresive. His figure should show fatigue, anger, determination, fear, but you made it as if he was watching TV. But hey, keep it up and try to work faster, 'cause allmoust 2 hours is a very, very long time for a drawing wich looks like that. Also try some shading (hatching). | 
