Do I think you should actively pursue commissioners? No - you are jumping into an already over saturated market (both low-mid level commissions in general, as well as pencil copies of photos.)
Take some time, refine what you do, and just make art. You are 13 - your art may be a bit advanced for your age, but you have a long way to go to compete with the bevy of people who do what you do.
Honestly, you could probably get a few at a very low price. The anatomy and shading are off, and rather basic. There's nothing very original about your style that would draw clients in. And when most people are looking for portraits they're actually looking for busts (head and shoulders), not just a floating head.
Take some time to improve a bit, you're already pretty good, just not at a commissionable level in my opinion.
And sorry for low quality!
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