3D product creation

We are based in the UK and own a small family 3D printing business. We have been paying a commercial licence to sell Dragon Eggs and Dragons. However we think it is time to have our own version of Dragon Eggs created so we can add logos for our clients etc. Do you create a model and the STL files for us to have full copyright and ownership of, is this something you do. We have other projects down the line too all Dragon related. We can provide an image and a quick sketch as to the type of Dragon Eggs we are looking at but would be happy to go with any ideas or advice on the models that you can give. At the moment the Dragons and Eggs we print and sell are by Cinderwingz EVERYONE uses them and we want something different I will attach some images with the sketches for you to see what we are thinking The eggs must be able to be increased and decreased smoothly in size so we can scale them up or down. We use Bambu Lab printers. Each egg can unlock into 2 halves and the locking system being used at the moment is a snap type system. There are screw systems around but we think these will wear very quickly as they are made of PLA We also have to be able to print them fairly quickly but are happy for a slightly longer print for good detail. the first 2 images are the Cinderwingz Eggs and as you can see we can vary them in size