Unless you are very, very good at altering texture files, I would suggest investing on character content which would include skin texturing or the DAZ Skin texture standard or hi-res packs.  They will give Vicky her more natural appearance. 

Now for character morph sets, most require that you own the Vicky 4 Morph++ content before you can apply your purchased content.  Check the readme's to be absolutely sure.  In all cases, morphs are applied from the Pose section of your library.  They are referred as Injection Poses and they are designed to change and texture characters without cluttering your drive with large mb files.