This Rose bag is surprisingly roomy and holds its shape even when full. The handles are sturdy and not do not stretch. Each flower is Granny Square.
You can use any kind of yarn, just make sure your crochet hook is the right size (or a bit smaller). I used Worsted weight yarn (#4) and 5 mm crochet hook and my motif is 2 1/2 x 2 1/2 in (6.2 x 6.2 cm).
Happy Crocheting!

https://www.youtube.com/watch?v=TBk_BQiMmL8&t=8s