Whilst I accept his comment regarding the green stuff on the right I'm not sure what else (if anything) is wrong.
To me the image is of some wind blown large grass/reed type plants... if that's what it is then I think "acceptable" needs defining. Other than that nothing strikes me as obviously wrong.

I'll second Trebah- nice garden and nice beach!!
Padstow is ok but you would be travelling a fair distance

The image produced assuming no cropping is 4928 x 3624... purists reckon at 300pixels per inch you would get top quality print at 16 x 12 inches which is roughly A3. However depending on viewing distance you could go larger... If you print at 150 pixels you would get 32 x 24 which is A1 and but to get A0 you're printing 100 pixels.
Provided your audience aren't nosing up to the print that may be acceptable.
To test this you could do a print of a section of your image at the different sizes and "stand back" and see what they would look like at the various pixels per inch.
(I'm damn sure that someone will come on and correct me for using the terminology pixels/inches for printing but this is how I work I'm not a qualified printer (or anything for that matter))

might be useful to let people know what's been sold

It looks......Chubby...

Excellent news, well done

Wonderful use of a great lens...
Glad to see you're using and enjoying it

Don't the leaves on trees move in the wind, which as you're using a wide-angle lens and the size of he leaves make them look soft.

been to Wales twice this year on day visits for Mrs S's work....in April and March- both days blazing hot (for the time of year) I was wandering around in just a shirt (with trousers on of course:blush

Do you have Shake/Vibration reduction switched on ?