Hi there,
I assume that the file you've prepared will provide some information about your personal experience? If it doesn't, I would have to conduct an interview with you, in order to customise the article to reflect your experience and tactics.
Apart from that, this seems like an easy project. Since you already have some base material, I'll have an idea of the tone you want. Using the reference articles you've provided, I'll prepare the full article. On an average, I write 1000 words per day, so as this is over 3000 words and I'll also require some time for proofreading and final editing, I've quoted a time requirement of five days.
I've written many articles in the past, and have done a lot of reading about social media management and use. I also manage two clients' Twitter accounts. If you'd like to see samples of past work done by me, please visit my profile, where you'll find a number of samples.
If you think I'm the right freelancer for your project and would like to work with me, send me a message anytime, and we can discuss the project further.
Thanks,
Priya