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Comments
1. Crest shape and size is largely determined by the shape and texture of the underlying bone. Bone with a pitted, rough-looking texture and lots of openings for blood vessels are thought to have large, elaborate crests or thick layers of keratin (see Majungasaurus' skull or a triceratops frill). Small, smooth ridges would only have a thin layer of keratin (no brow horns for velociraptors, which do have short crests just before their eyes).
2. Mostly, ear, eye, and nostril location is inferred from living animals. Most animals have the nostrils located as close to the front of the snout as possible; this is close to the front edge of the nostril hole in dinosaurs. As far as eyes, they're usually near the top of the orbit, but not at. Ears are located near the lower back edge of the skull; they should never be placed in the hole (fenestra) just behind the eye socket. A jaw muscle runs behind the ear; the ear shouldn't look like it's on part of the neck (I've read that birds are a far better example in this area than crocodilians).
3. Not all theropods had binocular vision; some may have had it to some extent, bu their fossils do not reveal this. The best examples of dinosaurs with binocular vision are tyrannosaurids and dromaeosaurs (an episode of the sci-fi show Primeval got this wrong when they had raptors tilting their heads to the side so they could see forward-bad!). A raptor would probably look at you like a hawk.
As for the Acro, I'd make his eye a bit smaller and change the shape of the pupil. The ear should be a nice oval shape, and the nostril could be a bit bigger. The openings in the skull should bulge outwards just a fraction; they house muscles and other connective tissues.
Hope I helped a little!
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Ok so on the whole ear thing, I will attempt to find photos of bird ears lol...I know I have an owl reference, but the jaw ear thing still perplexes me a bit, I guess I am so used to drawing horses and dogs, I'm stuck on wanting to draw jaw muscles that are similar in that range. I guess I have to read up more on how they actually moved their mouths and bit down. But I'm still anxious about drawing "hinged" mouths, lol, tell me that hole that appears in the lower back portion of the mandible - does the muscle structure run back through the mouth into the head versus over and around to the back of the skull? Maybe I do need a reference lol..
I just stay here and wait for more works.
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One question though-what are you doing about the copyrights on Raptor Red? If you don't get that out of the way, this project may never happen... o-o;;;
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