Hey Leighanna, I see some good things going on here. ALL of these photos "are about light". Photography means light-writing, ore writing with light, so it makes sense that all these images have a very large component that addresses "light" and "lighting conditions". Even the flower addresses lightm, in that trhe background is composed of a SHADOW...a form of nature's light-writing.
I would suggest the books of John Hedgecoe...he has some fabulous lessons that show and tell how to FIND light that makes photos of a certain type. Like, let's take the shot of the black dog: that has al all-ove sort of soft look that is called veiling glare. That lens in that condition at that focal length suffers from/offers/has veiling glare. It's sort of like a fog filter effect, or a mist filter effect. THAT can be used as an effect.
The sun shining through the paned window, with the snow outside and the hardwood trees in their winter state...again, a shot about "light".
Your photos 1,2,3,4,5 are basically emotional responses to "light"...they have a soft-ish, impressionistic, ethereal feel to them; these are not crisp, boring, dull, direct renderings, but are more painterly, more impressionistic, more evocative. Many hobbyists never get to the point where they can deal with these kinds of images.
Keep shooting, Keep seeing the world through your eyes and keep revealing your vision with your camera!