Size Really Does Matter.... At least picture size.

The specifics of understanding photos resolution and file sizes are way beyond the scope of this post. However an easy rule to remember is  “Go Big or Go Home”
Big Cameras – Not really, but do try to use the best smart phone camera you can get your hands on.
Big Pictures – Make yourself Big in the picture, find someone to help you or set up a tripod and a timer on your phone. This will help you to get a clearer picture
Big Volume – Take a lot of pictures. Just spam that button. Pictures are free. It takes professional photographers hundreds to pictures to get that one perfect picture. They just take the pictures very fast. So don’t be discouraged if your first ten or fifty pictures are bad. 
That great picture is coming, just keep clicking!