"If i had a picture of a Dragon, i wouldn't have any Problems to draw it in different views but to make one by my own would be a big challenge for me ^^."
A few words about creativity.
What is it other than giving the incident a chance?
Drawing less precisely, remembering less precisely, to get rid of the constraints of given relations between at least loosely related elements.
Creativity is not a gift in itself, it is an ability to honor the gifts of accidental results, it is a gift to free yourself from given believes that certain things belong together in a certain and already given manner.
The Hungarian Horntail isn't any different to mix of a greek mystical creatures, of an eagle, a dino, a bat, a hedgehog, a certain smile, a certain look of the eyes... it is for sure the result of several chances and decisions which gift will be developed further until it fits with a certain coolness!