Looks like it'll be fun, Ed!
My critiques at this point.
I really like the first page. Nice opening. Maybe give the footprint the impression of more beastly toenails? Not sure what your monster design will be though so that could be offbase.
Page 2/Panel 3: Leg anatomy needs to be refined a bit. The calf muscle and the upper leg could use some referencing. Upper leg is a bit bulbous, and not enough there to define the muscle groups. Calf looks emaciated a bit, when the calf presses up against the back of the upper leg like that, it becomes more pronounced.
Panel 4, needs a better sense of scale. He fit into a foot print in page one but due to his placement in this panel he looks like he's a giant himself, standing about 2-3 stories tall. Perhaps draw him standing in that footprint that's almost in the center of the panel, scaled to fit inside it as he does in page 1.