well ill explain
once you download the programs and stuff you can open a folder labeled "skis" then inside there will be pictures of skis and names underneith, paste your custom skis inside and delete 1 of the skis (custom1,custom2, custom3, 4frnt mix, ....) then you must copy the name THE EXACT SAME then presto you have custom skis
mssg me if you are having troubles with puting the skis in