Redo the background removal, ensuring that every single line and detail from the original signature is preserved. It is critical to not omit any part of the handwriting. Remove the gray paper background completely, making it fully transparent, including the small areas inside the loops of the letters. Increase the sharpness and definition of the dark blue ink lines, but do not alter the original handwriting style, shape, or color. The final output must be the complete signature on a transparent background (PNG format).
