I feel James you are way too conservative on the SS, you should be looking at 1/2000 minimum, don't be afraid to push the ISO with that kit, the camera won't explode

but a faster SS, expose ETTR and your images will improve and it will in turn help higher ISO. As presented it's hard to know without seeing the Raw, but either the FP was on the wing, not on the head, or the kit is front focusing which isn't uncommon, however applying some more sharpening does help.... Agree that the crop should be in Portrait mode, always try to shoot the way you intend to portray it, avoid cropping from Landscape to Portrait to retain/maintain IQ. The subject is angled away from you so you'll struggle in terms of DoF. The file has an untagged profile which may not display the image to it's best, even causing a colour shift so check that your files contain an sRGB embedded profile for web presentation, so as presented, it might not be so warm? One question, any ideas on what has caused a
'ghosting' appearance around the content, it's like a haloing???
TFS
Steve