Anybody has free time that can look over my website's articles and see how bad I am using with keywords?
Really vague topic. Anyway, you could always put some keywords in your title. Right now that's pretty valuable unused space.
Where's the link to your article? The best way to know is by using your keywords in the title and making sense for the readers. Don't just go repeating your keyword all the time..make sure your keyword density is normal.