Modeling curved/round bulge on a flat surface? I'm trying to model a curved bump on a flat surface like the image below:



Is there a recommended way to model this kind of shape? Should I add subdivisions to mark the outline of the bump and then have the subdivision modifier somehow create the round shape? I tried doing that but the curve I get is not defined well enough, and ends up looking like the plane has a "swollen" part instead of a well-defined bump like the one in the image...

Thanks in advance
How about using curves?


create a profile shape using Bezier or path
 
create your case contour shape and use the profile curve as taper object: