When I get an idea for something new, I normally type it up in a text file and put it in a folder called dom3notes. I come back to the ideas eventually and if they still seem interesting to me, I start working on them
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btw, your tutorial has really gotten my graphic modding off the ground. It takes me about 5 minutes to do a simple graphic that was taking me 30 minutes to do before. Before I even start on a graphic now, I butcher the base unit up into reusable parts and save it in a file, makes things a lot faster, easier to color through shading tools etc, and the results look really great.