Dragons concept art based on Trilogy Draconis Memoria - part I

My project on diploma - Concept art dragons from Dragonis Memoria Trilogy. In this part, I created 5 dragons based on descriptions in the novel. Each one lives in different places and has various skills that help them adapt to the environment. the Black Dragon lives in mountains, the Red Dragon in the desert, the Blue Dragon in oceans, the Green Dragon in jungles and forests, and the last one White dragon that want to... it's secret.