#1 is a bit less sharp, somehow it has less impact that #2 (camera wasn’t as good perhaps). Cropping tighter on top might be good to balance the composition. Nonetheless a nice shot, I like how you got the two flowers together. A bit more careful sharpening might be just the thing.
#3 looks like you has blown perhaps the red channel, the rendition seems to be off, saturated colour and lost definition.
When I shot nature with digital I found this to happen quite a bit especially with red colours, so I tried to keep an eye on the channels histogram.
Composition is good.