I would like to present a narrative about a medical and technical professional named Victor Amell. He is a lead engineer and tester for the recently renovated and rebranded NASA, which is currently engaged in a conflict with an alien race. The narrative requires the protagonists to relocate humans, with the setting shifted to the planet Kepler-452b. This planetary environment will feature the introduction of dragons and other creatures, though guidance is sought on the development of their species. For instance, the objective is to create a dragon with a more aerodynamic bone structure, enabling enhanced control and agility during flight.
Additionally, there are specials of dragons with more formidable jaws, reduced wingspans, and impressive terrestrial locomotion abilities. Lastly, the possibility exists for the inclusion of a system of miniature-breed dinosaurs and dragons as domesticated animals.
I would suggest fleshing out what your planet is before focusing on your creatures. That would give you a base to build upon. It would be a much much more natural way to go about this.
You will find the previously mentioned documentary very helpful to do this.