My feeling about the second image is that it works either as is, with the striations of the sand leading you into the curve and then further into the image, settling at the horizon/cloud line. It also makes a very strong image by cropping it so that the curve is coming in from the corner.
surely you are missing the point, the article is about technique, not about an individual image. If contributers get an unending stream of negativity, then a source of instruction will lost.
Pythagoras: so apparently without much effort at all i could be a portrait photographer for the guardian.
I think talent comes into it some where. Cannot understand the negativity that always accompanies articals that are intended to give guidence - but then perhaps some DP reviewers know it all.
vv50: what's the difference between instagram's policies on your images and those of facebook's?
But surely the BBC has the right to seconde your copyrite in its terms and conditions - perhaps we should all be as upset about them as Instagram