Minimalistic blank canvas skin for beginner

I have been playing around with editing skins lately and would really like to try make my own basic skin to learn the basic skin structure. I have been searching this forum and it seems like the way to go is editing an existing skin slowly which I have been doing past few weeks. I read there was foundation skin a while back for Frodo. Is there anything similar or a very basic skin that would be a good start in Krypton or Leia? Or is it better to learn with an older version of Kodi? I have also tried editing the default Estuary skin but finding it difficult to know what code can be removed to take it back to basics without all the widgets and addons. The information in the “skinning manual” is amazing, thank you so much! Would appreciate if anyone can point me in the right direction. Thanks