Make a cardboard tracing of the spine and cut it out. Trace the Spine curve onto the blade with a sharpie so you remove the minimal amount of steel.

With the blade resting on the bench edge up shape the edge to the sharpie ink with a diamond file or plate. Just get it close and the chips almost removed, finish on the stones.

Looks like you would just have to take a bit off the toe, the heel already has a sweep to it.

The steel is thin at the edge and will go quickly. Even if you decide not to make it smile, you will see what it would look like.

Nice looking blade the pitting looks deep, you may be better to leave it.