These three dinosaurs were the first amigurumi I attempted, as well as the first PlanetJune patterns I purchased. The patterns were very clearly written and easy to follow, and my first attempt at each dino turned out great. I believe anyone with a basic understanding of crochet patterns would find success with these patterns. Also, I have since made multiples of each dino in yarns of varying thicknesses, and the patterns translate well to each yarn I've used. I highly recommend these patterns.