Here are some common questions asked that don't belong to any particular guide, and their answers.
Setting My Cosmetics Doesn't Seem To Work
Cosmetics can be set in two places. When you are generating a seed you can set them as the default cosmetics for the patch file you are creating. The seed generation page is the one where you select your gameplay options before pressing "Generate Seed!"
Once you are on the patching screen, you can override those settings by turning on "Update Cosmetics" above the "Patch Rom!" button. Then you can set cosmetics on this page to override the ones set in the patch file.
If you want to use the settings in the patch file instead, turn off "Update Cosmetics"