Generally there are two ways that a tattoo design is decided on, the first way is what would generally be called "Flash" and involves existing imagery usually in a book or sheet form that will be generally taken straight out of that reference and traced onto the skin.
The other way of a design coming about is generally called "Custom". This custom style is what we commonly at Ink Me, we prefer this side as it gives more freedom to the customer and they can get something completely unique and personal to them.
A custom tattoo can come about from any kind of reference imagery, photographs, doodles, illustrations or even imagery just found on google images. The artists here at the studio will then take those references and create you a design, send it back to you for your perusal, if there are parts you don't like or wish to tweak they will gladly do this so it suits you perfectly and is exactly what you want.