How to Crochet a Simple Leaf Motif for beginners – step-by-step video tutorial. For crochet beginner's, it will introduce the weave of simple basic: a foundation chain, single crochet (sc), slip and shell stitches. Shell stitch. This is an adaptable stitch with many variations. To make a shell stitch, work 3 single crochet stitches in the same stitch.