Defiantly going in the right direction. Two comments that may help: this Da-Ren looks angry or possible evil, maybe draw it less like a reptile and more like a mammal? Second, there should be a clear difference between the different types of arms. One pair is much stronger while the other pair is thinner and used for fine manipulation. One of the reason the humans of Tantry are able to get away with pushing around one ton citizens is that the Da-Ren do not look threatening (except for being encased in natural combat armor and weighing one ton). Also I encourage your wife to experiment with less detailed images of different forms. She is clearly highly talented and she should release her creativity.