Tattoo filler is used to complete the empty space in a tattoo or between tattoos. The tattoo filler function is fill those spaces in order to have a better look and a complete tattoo. So, for example, if you want perhaps a bird tattoo with a phrase, filler tattoos might add in flowers or unique designs between them. Here, in this sleever tattoo, stars are used as filler, along with various patterns.
The design of a filler tattoo is important so that it compliments the existing tattoo and so the new portions are well integrated.