chin propped up in my hands, a patient spectator to the sport of my father's frustration.
Wow, excellent writing here... I like the end of this sentence. I wish the rest of the sentence was shorter so this great ending would be more prominent. Like this:
It's eleven years ago, and
I'm splayed out on my stomach, legs kicking in the air as I keep my chin propped up in my hands, a patient spectator to the sport of my father's frustration. --- No need to say it was 11 years ago. Readers like to figure some stuff out on their own.
..a bond between my father
Okay, you need 100 more words, and I want to ask you about the ideas you are expressing in the essay. This should have one main idea expressed at the END of the first paragraph, and then it should have 5 other ideas. Each of the 5 other ideas should support the main idea. So... at the end of the first paragraph you can tell the reader the most interesting concept: How you realized that cultural expectations based on gender had caused you to dismiss the idea of learning computer science, and one day you realized that there was no good reason to dismiss it. This makes the essay interesting. So, express that at the end of the first paragraph.
Then, the remaining 5 paragraphs each can begin with a paragraph 'topic' sentence that tells the main idea of the paragraph. Each paragraph can continue the story, or say something about that main idea: realizing that you can study comp. sci even as a girl!
Good luck! : )