He was a common enemy in Super Mario World. When Mario jumped on him he was flattened but still kept going even though he was as flat as a pancake.
What would I say about this pic?
Well, first I have to say that you captured the character really well. His pose is as silly and his expression as clueless as I remembered. You got the colors right too and small details like his tiny wings and red boots are there too.
I like the shading here. It gives some sense of depth to good old Rex. And background achieves the feeling of classic two dimensional platformers of those days really well. You got those rock formations right too.
If I were to ask what could have been done better?
But I won't.
There really aren't any flaws from this pic. It is well drawn and loyal to the original style. And it is really funny too. All that is in this pic is done very well. I will give you an A for this pic.
I feel nostalgic now. I gotta play this game on my SNES today.