Thank you guys, i found out when i pressed convert 
I have a question again, while reading this something that @Msiiek wrote:
“Look at the 1,2. Also the other way to not loose mythstones if obsidian gets wrong affix can be adding it first without preparations with epic affixes but you will waste more obsidians then. Or you can fill item with epic affixes, add obsidian and then add sockets and craft mythic. Your choice.”
in the thread: Crafting My First Mythic Item
What I don’t get is why not add the Mythic(turning the four mythstones into a Mythic), and then prep the epic affixes and then use obsidian? And there’s no way of removing the Mythic right? It is permanent right?