I am very happy to finish this long work, during which I learned the topology, made mistakes and started again. I finally want to make a point and move on. In general, everything conceived was realized, except for strings, because the first 4 strings should have a different shape. My knowledge was not enough to implement this either by modeling or texturing: ( Maya behaved unpleasantly, Arnold for some reason did not want to run in his native application, because I wanted to use the GPU in a different way, so I had to use Cinema 4D for the rendering, where there were no problems.