So I dig this concept and I really like the idea of stories that go into depth exploring one awesome scene. But I think there are a few things that could make your writing stronger.

• Paragraph breaks and spacing are important for readability. This story takes a lot work to follow the way that it's formatted.
• Show more and tell less. You don't have to explicitly state that your protagonist are lesbians and brilliant scientists. That's implied by their actions (being in love with another woman, being able to invent size changing technology). Sometimes exposition is unavoidable when setting up a scene but where you can look for ways to show the reader rather than just saying it.
• Descriptions of destruction can be difficult. Have you ever heard the phrase 'the death of one is a tragedy, the death of a million is a statistic'? If you go for broad descriptions of destruction, it doesn't have the same impact as showing the experience in a smaller scale. A human character experiencing this destruction and trying to flee or one of the giants becoming interested in causing a specific type of destruction - that gets to the scale where you can build emotion and character. That draws a reader into your story.

Again, I see a lot of potential in your writing and I'm impressed at your ability to get your stories out of the door. I'm offering this critic as encouragement because I'd like to see more writing for you.