Zelda Master Sword Bookmark

My lad saw a profile on here (https://makerworld.com/en/models/691469) for a Zelda MasterSword bookmark and asked me to print it for him.It didn't have a print profile listed and once I'd downloaded the STL I discovered that it was rather large and a single piece. Also having had a closer look he pointed out that the guard was missing the pointy bits to the rear. I told him I'd see what I could do and popped him off to bed. I don't know how to edit/modify STLs and I generally don't do "arty" stuff and do more "engineeringy" things with nice straight lines etc.I searched the web for a side profile pic of the sword and got to work in Fusion.I used the image to trace round and got half the outline and a centre line. Mirrored it, extruded it and popped in a slot for a glue in bit to go between the pages(similar to https://makerworld.com/en/models/619849#profileId-543792 which is a bookmark I've previously printed for him and he loves) and then modell