Congrats for completing the course with your own creation! We have several texturing courses in our library:
https://cgcookie.com/course/shading-the-sci-fi-helmet/
https://cgcookie.com/course/shading-fundamentals-in-blender-render/
https://cgcookie.com/course/short-film-character-production/
Though none of them are specifically about a creature like this. Perhaps you can still glean what you need to know to make your own textures.