O.K. First you are trying to get macro photography without a macro lens. Many lenses out there, and I mean expensive lenses, claim to be macro, but simply are not.
If you really want the close up and don't want to spend lots of money, any local camera shop will sell macro filters that work like magnifying glasses on your lens. They'll show you how they work.
Three other thought come to mind. First, you probably have your camera set to focus on all auto focusing points. Don't. Choose the center focus point, focus on your subject (if people, use their eyes), then re-compose the shot.
Second, don't center your flowers, always. Mix it up and move the center of the flower away from the center of the photograph. This will make the picture less flat.
Third, black and white. Take the two B/W photos and go back to your RAW editor and change the white balance. I won't go into histograms unless you ask, but with the bottle, boost colors that would normally make a color photo look terrible. This provides a great tool for contrast and B/W images.
I guess that leads me to a third thought. You are shooting in RAW and your color space is sRGB right? Hope so. I always shoot RAW + a small jpeg for quick reference purposes only.
This is just my opinion. Find what's right for you and stick with it. There is not one photograph that everyone will like, not one. As you like it, who the hell cares! Great start.
Lastly, cute cat.
-Nick