Thanks you for help me. Could you put a link to download a body mesh?. I found https://bitbucket.org/lindenlab/secondlife-creator-resources/src/master/models/ but it seems too outdated. Thanks for everything.
Of course it is easier to buy them, but I'm doing some research of the process of implementing shoes to the avatar created by yourself. I think it will be useful for any developer to have an easier time creating their custom models.