Look at how many competitions we have on this website versus the active users. The best thing I can suggest for a beginner is to look for another beginner and challenge them directly in our battlegrounds. That way you can choose someone who you think will give you a run for your money.
I don't think there are enough people at "beginner" level to have an official competition for. If we did that, than what is stopping from people wanting a one for each level?
I might give the SotW a go, and chances are I won't win, I normally make my art without thinking about size limitations, or using a rectangle, or other type of container, unless it is to be a printed.
PS: I love your current tag, it needs a lot of work, but still looks great. : )
