Hello! I made these templates to assist with making new textures. If you're not me, maybe you want to mod in your own wood or change the colour of existing wood? Here's how:

Open your image editor of choice. Put the template in one layer and set it to multiply the layer below it. In the layer below, paste the texture you want to use. For example, Log Bark Template: grab the bark texture from ___ Log.png, paste it a bit to make it long, then rotate it by like 45 degrees(?) or whatever angle makes it line up with the template, and then cut out the pixels that don't line up with the template. Now, the template forms the bark of the log block. There won't be a template for the chopped logs because I wrote a program to generate those and I don't actually make them myself.