I've been trying to import .cel files as symbology in QGIS. I was recommended to change those .cel files into .dxf, which I did. However, in order for the conversion from dxf to xml to work, I need the XML schema sample for QGIS symbology. I've exported existing QGIS symbology as an xml file. However, editing those exports to include the symbols I want to use, doesn't work. What should I do?