As ARISS announced there will be SSTV transmissions to verify and test the system. http://ariss-sstv.blogspot.com/2023/10/verification-test-oct-27-nov-1.html
After uploading decoded pictures in the ARISS SSTV gallery, you can pick the opportunity to start or complete the AMSAT Argentina ISS-SSTV Diploma.
See: http://amsat.org.ar/?f=6 with the Diploma and details of how to receive and send images. Upload here: http://lu7aa.org/index.php?dir=upload/ISS-SSTV1
tnx @LU7AA for the information!