I'd still work on that image size thing if I were you. I think a lot of people would rather walk away than fiddle around trying to see the full thing. What you have looks promising though. Try to throw in some stuff for your head to see if you're improving there.
I usually think of trivial things before going to sleep, and I was thinking ¨if life were possible in space andthere were an ecosystem in it, what would the beings living in there look like?¨, so I jumped out of my sheets and made this quick sketch.
i think that your on the right way just keep on making studies try to get comfort with shape and perspective youve got talent and if you keep working with passion im sure that you become a great artist - i want to see mroe -tons of studies so cmon!