to keep close to her old design try any of these - or put in Neg to reduce chance - SFW/NSFW
may need to add 3d, or realistic, in neg for certain 2d/anime styles due to having more 3d image training - or lower weight for less influence -
face/body
Cloud, blonde hair, spiked hair, blue eyes,
by default - may be masculine/Strong so may need to add prompts for a slimmer build, and appearance - and make use of Neg - muscular, etc
may give boobs - depending on style used (for some thats a bonus) - may need to add weight to flat chest, or otoko no ko, (femboy)
put braid, in NEG to remove it
if planning sfw your better off choosing other better loras of him
Outfit
sleeveless, gloves, turtleneck ,armor, shoulder armor, boots ,sleeveless turtleneck,
is his default attire BUT it may not look as it normally does
was trained in a Varity of questionable gear that has nothing to do with fighting with weapons and fisticuffs - may have to get specific