Good start Kathy..... Now, this is what I would try next. get your shot set up, and shoot in AV mode. Start at the smallest aperture number, and shoot the same shot iincreasing the aperture one stop each shot. Go all of the way to the end of the lens' ability. Then, set up the next shot....do the same thing. Repeat, again for the next shot. From what I could tell when I downloaded your photo to check out your EXIF, you were shooting in Manual... STOP THAT!!! JUST FOR RIGHT NOW.... and try the way that Brad Towery taught me how to do it. It goes really quickly, click off shot, up the aperture, click the shot, etc... Now, depending on the lighting, you may have a long exposure, so you are going to either want to use a cable shutter release, or use self timer, so you don't get a camera shake on the tripod either....
Anyway, with these, there are some parts that are wonderful, and some parts that are soft. You want a sharper crisper look....all through the photo.
Another idea, to practice on just one flower, as there is less going on in it, and easier to see what is sharp and in focus, vs not in focus.....
I think I must have taken about 1500 shots doing the Brad Towery method, trying to figure it out. Finally got smart and decided that i would just shoot every single possible apurture value out there, and also would take the memory card out of the camera to upload before changing the shot if I had something I liked instead of setting up something else first....
Just a few hints.... excuse my rambling...