I do allot of video. Video is my thing. They only look that way (the quotes from Marcus) because they're being misused. Like you're using show openings for what should be simpler wipe transitions, "SPORTSCAST" over trees, and energetic music scores during a lazy yellow dog gnawing on a stick, etc.
The photos look fine but you should pick a single theme and then build everything around that. The golden rule of video is: "More is less."
Typical slide (photo) presentations follow one of several formats for "general audiences" depending on length, content, and a few other things.
A typical format (without getting all technical and official and stuff

) might go:
1~3 sec Black leader, Opening, first shot, cut, 2nd shot, wipe (that matches opening), 3rd shot, etc. Minor Crescendo in the middle of the presentation with an effect, your best (or most important) shot, and slightly exaggerated matching score (music). More wipes and cuts that match either the middle effect or the opening, etc., and then a closing of some kind, roll credits.
There's many different formats but that's the essence - by looking at one possibility.