Is it easy to make my own Vanilla Sugar?
The best advice I can give is to use Alton Brown's recipe to get your timeline.  

Vanilla sugar is very easy to make, and I hesitate to answer with a link, but my advice would be the same thing as he wrote, because this is what I was taught.  

Basically, you want to cut the pod in half, and scrape the beans from the seed into an airtight container.  Then drop the scraped pods in the container, give it a shake, and let it sit for at least a week.  AB recommends 1-2 weeks; I tend to just let it go indefinitely until I need it.

A lot of people don't scrape the pod but I find that it adds a lot more flavor if you do it that way.