I'll just tell you what I see
I see somewhere on the T-shirt the words "giantslayer333"
I see in small writing somewhere, kind of like a secondary element to the pic, the scripture: Jer. 33:3 "Call unto me, and I will answer you, and show you great and mighty things, which you know not."
I see this t-shirt depicting the scene of David and Goliath. I see from the perspective of David standing over Goliath, with Goliath's body laid out, with a sword above David's head ready to come down and cleave off the head of Goliath. It sounds violent, but I don't want a depiction of violence, but of beauty, and that's where the art comes in. Here are the words I want depicted:
Beauty, Triumph, Victory, Overcoming, No task is too big, no giant is too big. I want the very sight to inspire and make hearts leap. That's the feel I want. I don't want the feel of 300 or some action film.
I want the t-shirt to have a surreal feel. I don't want it to be a blatant picture of a bible scene on a t-shirt. That is not at all what I am going for. I am not a bible thumper, so it better not feel religious at all. I want it to be very spiritual, but not traditional as far as in a religious christian way. You can make the scene spiritual numerous ways. You can create the atmosphere that the scene is taking place in by color, maybe swirlings, maybe like a rushing river, maybe a blast coming out from David. I want the t-shirt to ooze with "power" and "atmospheric amazement". I hope this isn't too confusing.
When you look at the scene what are the intangibles that made the story possible. Show the intangibles of power, faith, boldness, confidence, triumph, in color and maybe elemental artistry (fire-wind-earth-water)...Be creative.
One idea I had was trying just the color green. Using that as the color of the intangibles, and having the scene of David and Goliath being in black and white. I want the scene to look like a sketch...to have that sort of raw feeling and look. Feel free to be creative and use different colors. If you're having trouble finding a way to incorporate in the David and Goliath scene, find another way to demonstrate the spirit of what I'm trying to bring forth, and I'll be open to look at it and consider it. I don't know how hard it will be to do this. All I know is what I see.
Another idea I had was to put scriptures on the back in ancient looking text. I would like the whole chapter of 2 Samuel 23, to be written out (which can be copy and pasted easily from the internet and then modified to whatever text looks right), and everytime the number three is mentioned (even when thirty and three hundred are mentioned), I want the number written out instead of the word. So, "3" instead of three..."30" instead of thirty, and "300" instead of three hundred.
good luck, and may the best man or woman win!