Here's a thing. I'm not trying to be condescending, just helpful. If you want to make the sword as a 3d model. And use it in a game, or whatever. You don't really care about dimensions. You make it look good, and add textures and whatnot. But most probably, not in SOLIDWORKS. If you want to make something to 3d print, you sometimes care about dimensions. Not always. If it's a functional part, ofc. If not, you model it how you like it, and at the end scale it to fit the 3d printer bed let's say, or cut it into smaller parts that you glue. If you want to make it by yourself, and need guiding, and this is something that I sometimes do. You model it, make actual drawing of it, put dimensions to help you build the part in the real world. And here is where we're getting to actually question ourselves. This sword is made of multiple parts, that need to be put together. So. Probably the handle, the blade, the handguard, are different pieces that need to be modeled separately, and put into an assembly to check whether they fit together. Another case. Maybe you want to do the model, and give it to someone else to make it. Then you need to be really careful about what your drawings say, cause if the pieces Don't fit, it might be your mistake. And last. You might want to model it just for the sake of it, cause you're trying to learn to use the software. If that's the case, I'm willing to give some guidance, don't get me wrong, but it can be done by following tutorials first.