the one with the tub and the colors in the water is interesting, but the others can do a bit of work.
Try getting more scenery of things like trees and the sky...
When people come home from a day of work and traffic, they don't exactly want to stare at the wall witch is displaying... work and traffic.
If you ever go on vacation to the ocean or another country, take pictures of that. Or even maybe while it is snowing, visit the park while no one is there.
Take a picture of the sun setting.
Make them beautiful. Make them different.
make people wish they were just as good as you.
