Isaiah 65:17-25 gives one vision of a new heaven and new earth, where people who die before the age of 100 will seem cursed, along with the wolf and lamb and lion.
Revelation 21:1-22:4 is another vision of a new heaven and earth, where death is no more, also that the Lord God dwells with humankind so there is no need for a temple, and a tree with 12 different crops of fruit, one each month, and the leaves are for the healing of the nations.
John 14:2-3 is a well-known passage where Jesus says, “My Father’s house has room to spare. If that weren’t the case, would I have told you that I’m going to prepare a place for you? When I go to prepare a place for you, I will return and take you to be with me so that where I am you will be too.”(CEB)
Since we regularly pray for God’s will to be done on earth as in heaven: What specifics would be in your vision of a new heaven and a new earth?