No problem; it’s normal to have questions when using a new plugin. For the 64x64 px graphics, the principle is the same as for standard tilesets or icons in RPG Maker. The pieces can be designed like character sprites (facing forward or in profile) within a 64x64 pixel format. The image background must be transparent (in .png format) to avoid any solid white or black blocks appearing on the board. To test this, resize an existing icon or character to 64x64 pixels, place it in the plugin folder, and launch the game to check its positioning on the tiles. This provides a direct visual reference.