Welcome to the sharing forum! I've left the link in as the image is just oversize at 304.37kb. (
Photo Sharing Forum Rules)
I think this is a good effort, but the flash has left some shadows. If you are using a ringflash I guess the camera was not at 90 degrees to the flower.
There is good detail in the petals and this might be lost if you lighten the picture. However, if you also think it is on the dark side you could try it to see.