To make a throw pillow from scratch, you will need to follow a few steps. Firstly, measure and cut the desired size for your pillow cover from your chosen fabric. Next, fold the fabric in half with the right sides facing each other and sew along three of the edges, leaving one side open for stuffing. Turn the cover right-side-out and press it flat. Then, stuff the pillow insert into the cover through the open side and hand-stitch it closed using a needle and thread. Finally, fluff up your newly made throw pillow and enjoy!