AWS S3 Permissios - Create Folder while only being able to upload certain extensions

I'm trying to write an IAM policy to do the following:

• Allow user to access a specific bucket
• Only be able to upload a selected few types of files.. based on extensions
• Allow to create a folder in that bucket

I've managed to do the first two, but I'm unable to get the third requirement to work. This is what I've tried:

{
"Version": "2012-10-17",
"Statement": [
    {
        "Effect": "Allow",
        "Action": [
            "s3:GetBucketLocation",
            "s3:ListAllMyBuckets"
        ],
        "Resource": "*"
    },
    {
        "Effect": "Allow",
        "Action": [
            "s3:ListBucket"
        ],
        "Resource": [
            "arn:aws:s3:::bucketxxx"
        ]
    },
    {
        "Effect": "Allow",
        "Action": [
            "s3:PutObject",
            "s3:GetObject",
            "s3:GetObjectVersion"
        ],
        "Resource": [
            "arn:aws:s3:::bucketxxx/*.mp4",
            "arn:aws:s3:::bucketxxx/*.pdf",
            "arn:aws:s3:::bucketxxx/*.jpg",
            "arn:aws:s3:::bucketxxx/*.png",
            "arn:aws:s3:::bucketxxx/*.xlsx",
            "arn:aws:s3:::bucketxxx/*.csv"
        ]
    }
]

}