Flower Brooch

This is one of my earliest handmade felt flower brooch - what shall I call it?

Felt Flower Brooch by Ann's Craft

Is there any similarities to these buttercup flowers?

If yes, then I may call it 'Buttercup Flower Brooch'!  Unless of course, any of you (my beloved friends) can give me some info on other similar flowers... feedback is most welcome!