Use any filters by chance?
Can't tell but looks potentially back-lit, and I know it can be difficult for the camera to focus into the sun if the flare from the sun is entering the lens, causing loss of contrast which makes it hunt or be off for focus even in strong light. As for focus here, the tiny hairs are sharp at this size, and at F7.1 it should be in depth of field focus, unless it slightly back focused (I can't tell here though on this size of image).
The washed out issue to me is a combination of a few things: 1) over-exposed ambient light; the sky is blown out and the highlights around subject's hair are blown out. 2) low contrast, this is common with over-exposure and also with sun light entering a lens too. 3) white balance and saturation (flash looks cooler temp than ambient, and ambient could be warmer).
To re-do this image, I would meter the sky, so it's not over-exposed, to keep color & texture there. If you can't achieve that at 1/200s with a stopped down aperture, add a ND filter (I use 3 stop filters for this, usually a single 3 stop will get you in the ball park). Alternatively use a faster shutter, and use HSS on the light(s). The sky should be exposed properly and not blown out white. From there, I would drop that ambient exposure by -2/3rds of a stop or so. You can do this with the in-camera meter or with a light meter. If using HSS, you cannot measure it with a light meter. But if you use ETTL & HSS, just set it to -1 FEC and chimp a shot, the goal being fill. Also, use a 1/4th CTO gel on your light here to match the ambient and flash temperatures. If using a ND filter and not using HSS, you can meter with your light meter and measure your light. Make it fill light by measuring it to -2/3rds or -1 stop compared to ambient exposure of subject's face, just enough to knock out shadows, but not at key level exposure.
Otherwise, nice composition and location.