Some kinds of yarn are use in fly tying where a small body can be the desired look as well as the fuzzy look. S sure ou can do what ever you want, there are no rules about what materials you use. Just Learn the right way to tie.
This link is to some fly tying lessons and if I were you this is the best place to learn how to tie in different materials. They have a beginner, intermediate and advanced tying lessons. I know your not tying flies, but they tie in chenille too and all other kinds of materials. Personally I think this is better than a video and I also know it's right and not all videos are created equal.
good luck!
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