Save your import in PNG quality and with template's size (3500x2030). Doing differently would compromise the file's quality, which may be difficult to understand both for the admin who must approve it and for those who need it in case it should make a drawing.
Follow with attention the rules of markings, avoiding waste of time.
You can change the colout of the lineart but it must be recognizable and darker of all the markings on Kise's skin.
You can also create a light edge around the lineart, but avoid too bright colors or too thick a border.
It is allowed to make a thicker lineart and an halo behind the import, but not too wide.
Extra part related to mutations (like horns due to bone deformations) are free and they don't need to follow the markings patterns of the skin, but they must have the same colours!