Easy Crochet 3D Flower (Yolanda Soto Lopez tutorial). This is an easy to do 3D flower.. perfect for attaching to hats, beanies, scarfs, shawls, blankets, etc. This flower doesn't just lie flat, it is 3D. Using only basic stitches of the chain and double crochet this flower is a great addition to your projects. You will be surprised how quickly and beautifully it works up. If you're looking for a flower to attach to your hats this is it.