All very nice BUT;
"A little tip from me is, cover up the obsidian with sandstone, that way your enemy(s) may not know and may come attack with a disappointment! When the game lasts really long, players may start to get good tools such as efficiency diamond pickaxes. If so, you are always free to add more protection to your egg!"
Yes and you also make it easier to hide by the egg making the obsidian pointless. If a sneaky enemy like me comes along and sees that; I'll be happy if you add lots of layers because that will make it easier for me to hide in it and it takes two more seconds to get in the egg.