It's a good idea to do sew in. It can absolutely add more volume to your hiar and more charm to you. For those who favor brazilian loose wave hair or peruvian loose wave hair, this guide will be perfect for them.
First, choose the kind of hair you want and decide where you want to sew in. Then take a piece of thread and needle. Do sew in from the bottom and work your way up. Make sure that your weave is firmly attached to your cap or net. If you have leave out, then you don't need to apply closure on your top of head. Once you've finished sewing in, you can comb through your hair, then curl your hair with a curling iron to get big loose waves as the video shows.