Hmm. Not bad, maybe you should try mixing in some past tense, or the proper present tense? For example,
The large brute parted his maw, and lick softly across his blood-stained teeth as he watch the intruders stumble knowingly across his territory.
Parted is past tense, but lick is present.
Try this: The large brute parted his maw slowly, and licked softly across his blood-stained teeth as he watched the intruders stumble unknowingly across his territory.
cB You could always add me on FH and I can help you.~ Civil Chaos is the name.