Now I'm not a tattoo person, but this looks radical! While things like skulls and wings are not original tattoo ideas, what you have done is not use new elements, but rather new combinations, which is far more interesting while keeping to a "tradition". Your choice of using purple on the wings to counterbalance the gold serves you well but giving life and depth to the tattoo. Your varying curves add more spice to the design and gives detail without crowding up the design. I love the idea of using a third color, although I question whether light blue is the best color. As you are using purple and gold, a light blue negates the effect achieved using the purple, so picking another dark color may fix that. Overall, this design is breathtaking, and I'm sure there are many people out there who would love to have it.
This is fantastic & original adornment using very traditional shapes and themes; not easy to achieve (and exceedingly rare to see scroll/fleur/acanthus ideas used today) - I'm interested in using this design in a wood carving (electric guitar carved art) - I would extend the upper wing set 40-50% and 15 degrees or so down to make more sense of the lower winglets and to frame out the jaw line and give the overall skull/lion some depth through shading. I'm not a colorist so I'll spare you drivel in that direction!