Some more examples of the importance of negative space, using forward motion and stop action.
In the following example the electric wire that's cutting across the photo draws your eye to it and it seems to get stuck there. The barn on one side of them is running into their silhouette on his side. By editing out the wire and one smoke stack then cropping the photo closer around the couple you can greatly lesson the distractions and try to recapture the romantic mood at sunset. Often, just by shifting your position and being aware of distracting elements when you're framing the shot and before you ever depress the shutter you can eliminate those distractions all together and save lots of time in the editing process.
Edited photo
In this portrait you'll notice some distracting pieces of wood or shrubs right in front of his head in the negative space above him. A slight shift in your position and it can be completely eliminated.
When framing your shot take a moment to be mindful of all that's filling the space around your subject. When you're reviewing your images look carefully for any distractions, that way you can correct for them and take another photo if need be.
The next examples are of the way you can represent movement and forward motion by the techniques of leaving open negative space in front of your subject and by panning and stop-action.
by Rajaraman Sanjeevi -- Wikicommons
Isn't that a magnificent photo?
I imagine it took some patience to get this shot. A very fast shutter speed will give you this kind of stopped action.
Photo by Frank Winkler
by Frank Winkler
The beautiful flowing water effect is achieved by leaving the shutter open for probably two or three seconds, maybe more. Could be some Photoshop involved too, but, I don't think that's necessarily true. Beautiful photos.
This last photo by Xuuxuu has got to be the fastest car ever made!