Hi Christian, Thanks for the invite to your contest. Here is the initial design idea I came up with for your site and camps. I wanted to create something that would drop right in nicely at the top of your site, which is why I used this color background (it's an exact match to your website's color.) Also, I kept it to just 3 solid colors, so that it will print well onto shirts without any gradients, shadows, highlights, etc.
Let me know your thoughts, in terms of color and content, and we can go from there. I will post additional ideas as I refine the design further, but feel free to comment on this one in the meantime.
Here is an alternate font option: this one is still Military-feeling, without being distressed like the other. This one would work much better for embroidery, but the other would work great as a distressed t-shirt print (it would have a cool, vintage look!).
I forgot to mention the coolest part about my particular design: if you ever branch out to outside of the UK or want to put a different flag on there (such as England, Wales, Scotland, etc.), you can easily customize your logo to fit for any region!
We can also put a distressed layer on top of this design, maybe even just for t-shirts to make them weathered and vintage. Right now I put this distressed texture on it's own layer within the design file, so any designer or printer can easily turn it on or off as needed!