Once an order has been placed on Autotrucktoys.com, changes or cancellations are generally subject to the company's policies. It is often recommended that customers act quickly if they wish to make any modifications or cancel their orders. Typically, there is a limited window of time during which changes can be made before the order is processed for shipping. The best course of action would be to check the current order status on the Autotrucktoys.com website, as there may be specific instructions or options available for managing orders. For detailed information regarding order modifications, the customer service section of the site can provide the necessary guidance. It is always advisable to review the terms of service and FAQs for the most accurate information.