Hey Rick, good start to your sketchbook.
The first one has a lot of interesting material going on. The horns are a good choice, but the present set are a bit odd. With all of the spikes facing inward, they're not particularly threatening, and yet they're spiky (instead of webbed like a moose). They're a dominant form so it might be worth another round of TLC on the base there to make sure it'll carry what you want. The other thing on that sculpt is that the hands feel small and a little weak relative to everything going on around them. Does he carry a gun or a melee weapon? Looks like the low shoulder guard wouldn't allow him to raise his arm on the right side. Despite the size of that paragraph it's just little issues, there is a nice mass, and plenty of opportunity for detail in that one.
On the domwar2 one: Would those ankles work? That arrangement appears on reptiles, but they don't have a full vertical body weight on them often. Horses aren't much different, but again thats 1/4 of the mass, and it's going onto the toe, not into the ankle, then forward into the main foot. That was it on that one, nice anthropomorphic head base, the collars look very interesting and the costume is generally clever (he just had to be wearing tails didn't he