Hello, I'm also a cake making enthusiast and I'm happy to help you answer the question, you can determine the style of mounting nozzle used by the number of stripes on the cake pattern and the depth of the grooves between the stripes. Since it's a picture, there are no specific dimensions of the size, so it's just a matter of approximating. The first one is a six-stripe one with grooves about 50mm deep, and so on! Specifically you want to frame such a flower, can be more contact Oh!

Maybe I didn't answer them all, but that's how I look for framing nozzles.

Additionally, you can only make a really beautiful and lovely cake if you have the common sense to do it yourself!

Practice is the best teacher, thanks!