Nice shots. Dont be discouraged because you are getting looks and no feedback. The photographers on this forum respond better to birds of prey. If you look at your first picture,notice how striking the petals of the flower are, when they contrast with the deep green at the bottom of the frame. Try to isolate a bloom against a contrasting background and see if you don't like it better.
These are nicely done. The only thing I would consider is a crop in #1 & #2 so that the background OOF flowers don't have as much showing. Keep more attention on the in-focus one.
You picked a delicate somewhat difficult flower to experiment with because of the color. Whites are touchy to retain detail in, petals are often quite reflective and too much saturation or a small amout of overexposure will wash out the details.
First shot cropped down from the top to more of square format would work very well, the bright white in the background detracts from you front flower subject.
I think the second one was meant to be in a vertical presentation and will look quite nice that way. Notice the whites in the background on this one are much softer and hold a bit of color and detail and nicely fade away from the front flower. This shot has great compostion in it with the stacking of flowers and the softness of the back colors.
The last shot is pretty neat, to improve it you do not normally want OOF (out of focus) masses in the front part of the frame. Minimizing the OOF in the bottom of this shot helps quite a bit. Then the little little details really count, just simply removing the slight green slice at the left edge would help and then if the green spike in the middle was out you would have your subject as a dynamic standout!
All this being said is only meant to give you something to think about during your next shoot, I think these are very good, and with a little tweaking in each get even better. The key is to tweak in the viewfinder and I think you will quickly impress yourself and improve rapidly. Flowers are fun, and compositions are never ending for color, isolated parts and beautiful soft bokeh backgrounds. You might spend a little time over in the macro forum looking at and reading many of the critiques, lots of flower shots get posted.
You did real well and I hope to see more of your work.
