So what you need is a piece of wood you will be using for the dagger
Hot glue gun
Dremel (Not unnecessary but very helpful)
half circle files
Step 1: Shaping
Then when you get the main shape, start going in closer. My wood split a little but I filled it in later.
Then get out your dremel/file and start shaping the grooves. Use your wood shaver to make the handle round, not square-ish. Look at pictures.