 So you don't know how to make an outline. Not a problem. Now, I'm just gonna show you the most popular method. It's real easy, just about everyone I know uses it. It's called inverted hull. In order to do it, create a new shader, call it outline, delete the principle, shift A, S, emission, change the color to black, drag it in here. Then go to materials and turn back face calling on. Then go to modifiers, solidify, set material offset to one, set normals to flip, high quality, change the thickness, and you're done. If you don't see an outline or it looks weird, you probably have the wrong number in material offset. Remember, blender starts counting materials at zero. So zero, one, and we have a one here. Zero, one, two, three, and we have a three here. Hope that helps. And as always, hope you have a fantastic day, and I'll see you around.