Contract creation now happens directly in the create flow. Use the + Create New button to get started.
First click on an app and you'll be prompted to Select a contract. If you're looking to deploy a new contract, you can do so here.
Upon selecting + New Contract, you'll be led to a contract deployment screen where you can decide on:
Network
Contract Name
The type ERC721/1155
ASCII
Note that once your contract has been published to a blockchain, it becomes immutable. Things such as Type/Name and ASCII art will be permanent.