Flare occurs when we have too much light coming into the lens and getting reflected.
Usually we subconsciously know that, know its a flaw and good.
But:
You can, of course use this as a part of an overall image concept and composition.
In the presented case it sort-of works, but only sort-of.
Overall the composition is not overly interesting.
The light is great, blinding, but that's it.
Sky is an uninteresting mess.
So - if I had to draw a line and sum it all up, I'd not use that image,
but keep the beautiful backlight in memory and the flare as a stylistic tool in my head and re-shoot with a different basic scene.
Cheers
~Chris