>>69266
Not bad. Art style is simple but effective. You could use a little work on your internal linework (e.g. the lines on the inside of the elbows). Simply put, you don't have a whole lot of it, and your art consequently looks a bit featureless and flat. They don't necessarily have to be hard lines, but there should at least be some soft shading, say, on his belly (especially if he's curled over forward). Don't forget about things like the bones and major muscles.
Other times you have too much. The leg lines shouldn't extend all the way to the dick; they're continuous with the torso, and that continuity should be expressed with weaker differentiation.
Here's a couple pics to help you out with reference.
For your next drawing do a big, beefy dragon wearing a diaper and looking proud of it