Celtic cross tattoo featuring intricate knotwork patterns along the arms and base of the cross. At the heart of the cross, place a vibrant four Leaf clover, its leaves shaded with subtle gradients of green, symbolizing luck and unity. Above the cross, incorporate a regal crown adorned with ornate details, such as small gemstones or filigree, to signify authority and strength. The entire composition should have a balanced, harmonious feel, with the textures and shading creating a sense of depth and dimension. Surround the design with a faint aura or subtle accents, like soft wisps of light, to add a spiritual and mystical quality tattoo idea