Creating an ERC721 Simple contract to mint NFTs

Smart Contracts
,
1

I am trying to create a smart contract that will let people mint NFTs (500 supply) at a given price of 0.01 ethereum.

I am somewhat new and have been following tutorials but have generated this code using the contract wizard here:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

contract MyToken is ERC721, ERC721Enumerable, ERC721URIStorage, Pausable, Ownable {
using Counters for Counters.Counter;

Counters.Counter private _tokenIdCounter;

constructor() ERC721("MyToken", "MTK") {}

function _baseURI() internal pure override returns (string memory) {
    return "**example**";
}

function pause() public onlyOwner {
    _pause();
}

function unpause() public onlyOwner {
    _unpause();
}

function safeMint(address to, string memory uri) public onlyOwner {
    uint256 tokenId = _tokenIdCounter.current();
    _tokenIdCounter.increment();
    _safeMint(to, tokenId);
    _setTokenURI(tokenId, uri);
}

function _beforeTokenTransfer(address from, address to, uint256 tokenId)
    internal
    whenNotPaused
    override(ERC721, ERC721Enumerable)
{
    super._beforeTokenTransfer(from, to, tokenId);
}

// The following functions are overrides required by Solidity.

function _burn(uint256 tokenId) internal override(ERC721, ERC721URIStorage) {
    super._burn(tokenId);
}

function tokenURI(uint256 tokenId)
    public
    view
    override(ERC721, ERC721URIStorage)
    returns (string memory)
{
    return super.tokenURI(tokenId);
}

function supportsInterface(bytes4 interfaceId)
    public
    view
    override(ERC721, ERC721Enumerable)
    returns (bool)
{
    return super.supportsInterface(interfaceId);

I have uploaded 500 images to IPFS and have a link, would I input that into the baseURI? I'm also assuming I have to change the mint function here to be open to anyone and require 0.01 ethereum.

Is there anything else I'm missing?

2

Do you want your users to pay the fees of minting themselves

3

Yes, so the exchange would be them purchasing an NFT

4

Yes, that's lazy loading.
You have to change minting from onlyowner to payable