This pattern is advanced, but all the tricky parts are illustrated with photos.
Stitches and concepts used: chain, single crochet, treble crochet, working in the round, working in front or back loops (photo illustration), working partial rounds
Written with US style terminology

Materials
Worsted Weight Yarn
2 oz. Green
2 yards Light Yellow
13 yards Pink
2 ½” clear plastic buttons

Tapestry needle recommended to weave in ends and attach flowers