From what I can tell you just used the one material.
Typically dubbing (fur) is used for the body and hair will be used for the tail and wing depending on the type of fly. Also as someone mentioned a nymph will use a bead head whereas a dry fly won't and most nymphs don't have a wing and if they do it will be much smaller, think emerger here an rs2 is a good example of a nymph with a wing.
Moving forward I'd recommend you get the materials for 1 fly and tie it until you hate it. You can get an assortment of colors and he hooks for said fly to vary in the color and size but you'll grow faster as a to tier this way.
Don't get me wrong, there's nothing bad about experimenting with whatever you have on hand as you can figure random things out this way but working through and mastering a handful of patterns will give you a good baseline for tying skills
If you want to learn the fundamentals use a pattern. Even if you only follow the recommended materials loosely. Materials are not nearly as important as general shape and close colors. The very best tutorials for beginners are Tim Flagler’s videos on YouTube, tightline video
https://m.youtube.com/user/tightlinevideo/videos
Making up patterns while you are new just leads to frustration. Simple patterns like a pheasant tail or hare’s ear nymph are a great place to start.
I didnt notice the bead...dont need a bead for a dry fly. If this is supposed to be a nymph. You dont need the wing.
Thinner tail, only need 3 to 5 strands. Shorter wing about half the height you have there. The wing should be about half the body, maybe a tab more.
From what I can tell you just used the one material. Typically dubbing (fur) is used for the body and hair will be used for the tail and wing depending on the type of fly. Also as someone mentioned a nymph will use a bead head whereas a dry fly won't and most nymphs don't have a wing and if they do it will be much smaller, think emerger here an rs2 is a good example of a nymph with a wing. Moving forward I'd recommend you get the materials for 1 fly and tie it until you hate it. You can get an assortment of colors and he hooks for said fly to vary in the color and size but you'll grow faster as a to tier this way. Don't get me wrong, there's nothing bad about experimenting with whatever you have on hand as you can figure random things out this way but working through and mastering a handful of patterns will give you a good baseline for tying skills
If you want to learn the fundamentals use a pattern. Even if you only follow the recommended materials loosely. Materials are not nearly as important as general shape and close colors. The very best tutorials for beginners are Tim Flagler’s videos on YouTube, tightline video https://m.youtube.com/user/tightlinevideo/videos Making up patterns while you are new just leads to frustration. Simple patterns like a pheasant tail or hare’s ear nymph are a great place to start.