Dabbles and Writing practice

I'm looking for tips and constructive criticism as I try to improve my writing. I will post the prompt at the top so if people want they can use it to.

For the most part this is a collection of short stories surrounding my characters and their worlds. Most of my worlds are heavy fantasy but I do have some sci-fi and modern setting as well. I want critique to help me better my writing skills so I can write some longer stories.