"Single white lily against a black background with the main focus lines" - Jaime Crawford
The exposure is perfectly balanced even when shooting with a flash, good job! The composition is simple but beautiful nonetheless and there's a good use of symmetry. The focus is razor sharp on the front side of the flower and the colours are lively and vibrant but still look natural.
How This Photo Could Be Improved
Depth of field
This photo was most likely taken with a wide aperture and/or at a longer focal length. The front part of the flower is in focus but nothing else it which results in a slightly strange look, it taking the viewer a couple of seconds of looking to realise that the subject is a flower.
There are two options to fix this depth of field problem. The first one is to shoot with a narrower aperture and/or at a shorter focal length. This way the photo would be sharper overall.
The second option is focus stacking. This means taking photos with different focus points and then combining all of the shots in one final image. This does take more time but it yields better results.
It is clear that there was a flash used in the process of taking this photo. One thing that you want to avoid while using a flash are hard shadows like the ones in this picture. It seems like you pointed the flash straight towards the flower and then pressed the shutter button – Something we all do in the beginning.