Regarding your first post in this thread of how to create a similar material to the one in the picture:
Once you have solid low-distortion, “flattened” UV’s ready to take a texture without distorting it, you can either add a tile-able texture tile, and adjust size, frequency, and offset via shader parameters, or you can paint your UV map to create the completed texture in it’s entirety.
A similar material can easily be created in either Paintshop Pro, and Photoshop (or GIMP, Artweaver, Paint_dot_net, and etc.).
I created the following tiles, and material in Irfanview, and in conjunction with STile, but the same techniques can be applied in the aforementioned software. (These tiles are free for use; Both commercial, or non-commercial). You can find both free programs here:
The pattern in the shirt is a simple four square repeating plaid that I recreated at 512X512, 1024X1024, and 2048X2048 seamless tiles, and a subsequent 2048X2048 texture material to be used for texture creation (also seamless tile-able). When creating such tiles you need to think in powers of 2. I created the tiles as follows:
1. I created a 256X256 Grey tile. This was accomplished by creating White base, adding noise filter, desaturated to grey-scale, and then re-implementing 24 bit color.
2. I created a 256X256 Black tile. This was accomplished by duplicating the Grey tile, applying a metallic filter, applying a median filter, and then using clone brush for clean-up.
3. Next, I created a new blank (White) 512X512 tile for the base.
4. I created a 256X256 marquee selection, put it in one corner, and then did a copy/paste of correct 256 tile for corresponding spot. Then did the same for remaining 3 spots (excluding White, of course). This completes a 512X512 seamless repeating tile that can be used in shaders, or for further tile creation.
5. I went on to create a 1024 tile by duplicating the technique above. You create a 1024X1024 base, a 512 marquee selection, and then copy/paste your 512 tile into all 4 corresponding spots.
6. I created a 2048 tile by duplicating the technique again. Now you have a huge tile with huge plaid squares. If you want smaller squares you can adjust tiles applied to shaders, or you can create smaller plaid tiles from your created tiles. I accomplish this via the next step.
7. I created a smaller plaid, but keeping the 2048X2048 tile size by using STile. Using Copy/paste I inserted my 2048 tile into STile, and then I used the rotate seamless filter (applied a few times to get results wanted). Save, and done.
Results: (excluding 2048 tile)