Helicopters at air show in Augusta, ga...please c/c

Hmmm....

1) Good placement in the frame (room to fly into)
2) Kinda menacing sky (fits with the subject)
3) Exposure looks ok (image is kinda small to know for sure)

- But -

1) Shutter speed too high = frozen rotor blades
2) Chunk of something at the bottom of the frame (tree branch?)
3) White Balance a bit wonky. Sky looks quite aquamarine.

Flying, thanks for the comments, fairly new here, so your words are helpful. I think the chunk may be a tree top (?). By the time shutter speed light in my head went off it was to late. White balance is wierd. Thanks again

Some people use Auto WB outside, but why not at least use a pre-set?

For Custom WB:
It takes about 30 seconds, & you really don't need to buy a gray card. If you shoot white paper ON THE METER READING, it will photograph gray, just what the cam needs for Custom WB. Use that exposure for the WB set-up.
It's pretty good for adjusting exposure too, when there are bright highlights that aren't important in the frame.
What’s best for exposure, Gray cards, white paper, expensive attachments for the lens?
Gray Card…White Paper. What’s best?

I understand, I'll give it a try. Thanks for your comments.