I wrote about it a while back the "rule of three" in that odd numbered items tend to grab our eyes and be more pleasing design wise. Applies to photo, writing and wiccans. Google it for yourself once and see what you come up with.
I liked this image of all I shot this morning. The contrast between this years bloom and last years remnants, the 2 objects setting up a fading perspective to the snow covered mountains in the back. The contrast of the light yellow blossoms against the brilliant blue sky (its 80's again today in the LA area...not bad for February).
This was shot bracketed, not for the purpose of HDR imaging, but a fine bracket of 1/2 stop +/- from "normal". The subsequent RAW file I fine tuned the exposure further. Voila...shadow detail, brilliant sky and of course all the details in the sunlight pale yellow blossoms.