First of all, I can't decide if this egg is solid like normal hen egg, but painted blue and green or this is transparent, jelly- looking egg. I think you wanted to make second one because of embryo, but it don't look like this.
Maybe you should delete outlines inside egg and make one or two colors between green and blue? Probably making good lights and darker colors on one side of egg should help it.
But colors are really good I think.