I kinda dig the image actually, and the little line going across, but the size of it is somewhat ostentatious. It's not so much how large the overall image is, but rather the fact that you're using only one image to cover the entire space instead of maybe adding more elements to give the viewer different pieces to look at as a whole. I'm not sure if this piece really needs text, the way it is just makes it seem like something added to take up more space and it doesn't really convey anything particularly important comopared to the image.
Keep working at it, try and diversify what you can with the image you got, like i said maybe adding more parts as not to take away from the focal point, but rather to compliment it and not make the singular image seem too loud proportionally to the rest of the shirt. Good for a first submit, keep working at it bro.
Be gentle...It won't hurt will it :(?