@lunardeercat
My go-to advice for any “how to draw [x]” type question is usually to study photo references …of course, when it comes to dragons and other mythical creatures, this presents a bit of a problem.
Since you can’t look up real photographs of dragons’ talons, the next best thing is to find photos of similar structures on similar animals. This could vary depending on your dragon’s design, but as a starting point I would recommend looking at human hands, lion/cat paws, bird talons (especially birds of prey), and lizard/alligator feet.
(Photo sources: human, lion, eagle, alligator)
When you’re looking at a photo, try to break it down into component shapes – starting with the largest, overall shapes, and then moving towards smaller, finer details.
For hands, I usually start with the palm, then the shape of the fingers all together as one piece (often broken in two by a line denoting the knuckles), then the last joint of each fingertip, then each of the individual fingers, and finally the small details like finger nails, wrinkles, etc.
Here’s an animated version, in case that helps you visualize the process better:
After studying the creatures you’ve chosen to base your dragon on, you can blend their traits together to create something new.
Hope this helps!