Here is the basic take from this video: Select the faces you want to crease (or create them with a beveled edge) ,go to sculpt mode, go Face set from edit mode selection, select the cloth filter, change the tool settings to include face sets, then use the inflate/deflate function on the face set and mesh in an alternating fashion
This is the perfect type of tutorial! Thanks to the automated voice over, it’s easy to understand and follow as a non-native speaker and each step is clear. Thank you so much for this, you’re doing God’s work!
+1 to my fav blender tutorial playlist