>>1937890And about the curve: just go in the direction the curve is already prevalent in. I recommend tapering the bow with a knife (so the handle is the thickest, and the ends are the thinnest part). This increases flexibility and just shoots better.
I used micro paracord as the string, with some tape in the middle for the end of the arrow to hook into. As for the knots: use a noose knot, it's self-tightening and is easy to undo if you wanna make the string tension higher.
