Pic 4 is excellent... well done!! :thumbsup::thumbsup::thumbsup:
I like the concept of Pic 2, but don like all the dead bits on the orchid. Can remove in PS or use a better orchid?
I like Pic 1, but perhaps look better if bottom of photo was also sharp... what f stop used? Also if there was no shadow to the left (ie. straighten that petal).