Go for it! Things you can do with the Item
4.You can create one End Product for a client, and you can transfer that single End Product to your client for any fee. This license is then transferred to your client.
5.You can make any number of copies of the single End Product, as long as the End Product is distributed for Free.
6.You can modify or manipulate the Item. You can combine the Item with other works and make a derivative work from it. The resulting works are subject to the terms of this license. You can do these things as long as the End Product you then create is one that’s permitted under clause 3.