/3/ - 3DCG

>>692096
The tip that really helped me a lot is to always surround the boundaries of hard creases with face loops like so. This makes it easy to add edge loops and sharpen the transition and also prevents unusual creasing during subdivision, it looks like the subdivision algorithm uses face loops to determine which direction a crease goes. So if you were using subdivision on your model, you'd want continuous face loops on the red lines such that you could insert a new edge loop across those areas and only those areas to sharpen them up. When you make a new edge loop, it cuts through faces by going through the two edges that don't share any vertices. An easy way to make these sorts of face loops is to select all the faces that form one hard crease and inset them.