proportions still seem a bit off, now he looks like he's 10 - 12. I'd use some ref.. the body seems too thin to be a toddler.. needs more meat, fatter head.
I think it looks pretty friggin fantastic! There ore only really a few things that really pop to me that could use some edits. - I'd change the tint of the skull a little to match the color of the fire a little more. It just gives the character a little more flavor and has been depicted in comics with the different colors…