Can someone help integrating 2 designs in a single tattoo?

Hi guys,I'm looking forward to integrate 2 designs I've found into a single one for getting a cover up done. Here are the base images:https://ift.tt/2nICHjW aim is to follow the idea of the Yin and Yang to create a single tattoo out of these 2. The end result will be used as a cover up on a shoulder blade (girl) if that matters.The dragon has a tail that looks a bit too long so happy to get it shortened.Thanks! https://ift.tt/2osRM9C