Nice capture. I like the sparks, the silhouette in the lower left, and foliage in the background. Fire is a good subject, but often difficult to shoot -- you've done pretty well here, and it would have scored better in a better matching challenge.
Nice framing. I like the untouched tree on the right. The blurred embers give it lots of movement. The colours of the embers are also really nice, rich and saturated.