Article Writing

I need someone who can write 24 articles for me for my website. I'm willing to pay $3 per article. English should be your first language and it would be good if you understood what you are writing about. The topic is about "sound effects" (see attached document). Please submit one example of 250 words (in attached document). Based off that I will pick a winner. When you write about the topic review the sub-categories and summarize what the heading is all about. Look at the products and talk about the products. Thanks.