Competition closed - Judging in progress
ETA:
cg57 - the fake frame works fine, and the silvery-blue tones are sympathetic to the subject. Needed one more fake element in the bottom left to counteract the empty space.
noelcmn (General comment) - I don't know which tool you used to separate the fore-ground from the back-, but it's worked on some edges (eg. orange flower in lower left) while making staircases of others (eg. green stem emerging from vase). Several pixels of feathering when making the selection might help.
(Colour) - I'm not convinced by the colour shift from peachy to pink.
(B&W) - Split on the diagonal, the lower left two-thirds are great, particularly the texture of the pale flowers. Upper-right parts are dark and don't show as much detail or contrast between the green and the orange - possibly a different digital colour filter would give a better result.
Waffles - compared against noelcmn's entry, I like that there's detail visible in the orange flowers on the left and right, but, as mentioned above, there's not as much diffrentiation between the orange and green as I'd have hoped. I'd have wished for a bit more texture in the pale flowers too.
Kerrowdown - in contrast to cg57, the addition of space on both sides doesn't give the feeling that there's an empty spot. I think the darkest shadows from the plant (the stem as it emerges from the vase, and the three flowers on the right) need lightening.
rpjallan - light and bright; excellent job on cutting out the foreground.
tuggie76 - singular take. I don't think over-saturated red works, but the fuchsia colour (upper-centre left) is interesting.
newmikey - submission not for consideration (I hope I read that right).
jmacias - the most eye-catching entry. A tad too bold for my walls, and the graphic take on something as delicate as flowers is mildly unsettling. Would do well as an Agatha Christie book-cover.
My thanks to all contestants.
The texture in the petals takes it:
the winner is noelcmn's black and white entry.
ETFA: PM sent.