Component Template Editor not appearing anymore


While I was working through one of the YouTube tutorials for AppGuyver, I could no longer see the component template editor (which I was able to use earlier) and I am not sure how to bring it back. Need help on this! I was trying to add additional texts and icons to this card in attached picture…

Thanks and Regards,

I managed to figure it out. I had to click this icon instead!

thats right, thats the new way of opening the editor,
be sure to take a look here to see the basics of composite components