Nitpicking time...

Beru wants a good, long shower on a desert planet where their only source of water seems to be vaporators (which collect water vapour from the air)?

Blue milk should either be just "milk" or "eopie milk" or whatever you want to call it. There is no evidence that they drink white milk, so it seems odd that they would call it what we call it.

I'm also curious as to what kind of monotheistic religion that simply titles their deity "God" is native to Tatooine, or where it came from if it's from elsewhere.

I think you pulled this off in a believable manner, with the sandstorm/twisters and all. It makes sense and it doesn't seem too shoehorned into the story.