Move these into a PropertyGroup (as discussed before) OR, if you want to keep it simple for now, put them in a dedicated "Configuration" section at the top of the file and add type hints.
# Top of file
mybrushsize: int = 13
myshadowsize: int = 70
myextrasize: int = 13
Move these into a PropertyGroup (as discussed before) OR, if you want to keep it simple for now, put them in a dedicated "Configuration" section at the top of the file and add type hints.