im fairly new to modelling in blender and im working on modelling a watch I designed. I want it to have two smooth depressions as shown in the attached sketch, however I do not know how to get to this point. I have already made the polygon frame of the desired shape to be cut.
There are a few ways to do this.
The most basic is using smaller and smaller loops (inset faces tool is your friend)
Subdivision modifier will then smooth it out.
Other (more elegant) ways may include Boolean modifier, edge creases, sculpting, etc.
Note: It was fun to try this, if you need any help, let me know.