Basic Fly Tying Instruction. Fly Fishing is fun! It's a lot more fun when you catch fish!! We will get set up in my Art Studio/Fly Tying Studio/Garage. I will supply everything you need to tie The Dirty Harry Fly. We will proceed with the latest step by step instruction to tie The Dirty Harry Fly. Once we are done you will receive instruction to effectively fish your newly tied "go to" salt and freshwater fly.