I am suggesting to make it again:( It will probably take more time trying to steam, fill in the crack or shortening to smooth. In addition, I have made attempts in the past to correct cracks on figures. Usually endup incurring more problems. Steam colors running into each other, shortening makes the area appear smudged(looks not quite right) So im my opinion your easiest quickest solution would be to redo it. You have some amazing talent:)
Party Cakes
