Krahhl - Very nice sketches! These turned out very nicely. The first two are definitely my favourites -- nice work experimenting with a unique angle on the first sketch. Feel free to continue on with whichever sketch you like best.
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ArtCrusade - Very interesting sketches you've got, here. (: They are just fine for step 1, no worries.
In the first image, it seems like the humanoid-being is placing his head in the Crocodile's mouth, but the Crocodle is on a separate plane, making it a rather confusing layout. I suggest either making sure the crocodile's body is on the same level as the human's, or introducing some sort of perspective, as if the crocodile's body is moving directly away from the viewer. Here's a rough example of what I mean:
You have some lovely curves going on with your Croc's noses, but notice how the top of a Crocodiles snout is actually very straight and rigid, and doesn't bend.
Aside from those little things, I think you're ready to move on. (: Feel free to pick the sketch you like best, and start refining it into a fully-fledged illustration.
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Wizelsnarf - I think these are the happiest Crocodiles I've seen, yet!
You've done very well, so far. The only thing that I can really pick at, is that in the first sketch there seems to be a bit of perspective confusion -- most of the Croc's body is seen from directly above, but the head is turned entirely sideways.
Other than that, very nicely done! Feel free to continue on as you see fit. (:
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Krava - Very impressive! These are great sketches. Ideally, I would like to see more definition with the understructure -- but the purpose of that is generally to help with anatomy, and you're anatomy looks lovely, anyway.
The only mistake I can spot here, is that the top-most Croc's eye seems a bit too high; it looks a bit like his eye is more in the center of his forehead rather than at the top-side of his head, where it should be. Other than that, great job. C: I look forward to seeing what you come up with, further!
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SunnyGreens - Ah, lovely sketches! I love the perspective in the second sketch -- very daring. c:
I think the first sketch could be improved if the Croc's head was more towards the center, looking more toward the viewer (slightly or fully -- either way). As it is, I have the feeling that the figure is off-balance and tilting to the left.
Anyway, nicely done, feel free to move on if you'd like!
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Thanks for your patience, everyone! Everyone did an excellent job of following the guidelines and doing the assignment correctly. C: I can't wait to see more!