I totally understand. I find the best way to improve on drawing any subject, especially fantasy creatures is to study and draw from real life. When I draw dragons I go through my massive collection of images of animals, dinosaurs, fossils, etc and use them for inspiration and to help draw them more realistically. For example, with western dragon its good to look at the anatomy of dinosaurs, seeing how they stand, how they balance themselves with their huge tails and legs, etc. A great reference for dragon wings would be looking at bat wings. Also study reptiles, pay attention to their anatomy, the patterns of their scales, the different size and shapes, marking, and so on. The more you design your dragon off of real living creatures or extinct animals the better you'll give the illusion of the beast your designing to look more realistic. It can also help looking at artist that inspire you and study how they design their creations. However, always be careful not to copy. It's a lot of work, but it's good to start building a collection of photos or books to use as references. Even just Googling pictures can help a lot. It'll take practice to get it down just right. Hell, I'm still trying to improve my dragons. It just takes time and practice. I hope this helps!