Here is my honest opinion:
They are good
Explanation:
The pictures are kind of pixilated I think that if you took the pictures with a better camera I could explain more. I definatley think that your art is good, do you take classes?
Answer:
I believe this is the painting you're referring to (The Last Supper). It's not symmetrical.
Explanation:
Apple-X
Answer:
True
Explanation:
You always want to make sure that your back ground is net because it will show people that you like your house to stay clean and it will also show what you like kind like a flower in your background will show you like how it smells, the way it looks, or just the color of it.
Hope that helps you :)