I can see an improvement from the first post till the latest, particularly in the wider use of colors and overall composition so good job there! But if I had to nitpick, I'd say some of your colors feel a bit dead from the lack of contrast. My tip is to play around with lights and shadows to make it 'pop' a bit more


Text? I keep imagining a white script-like font saying 'Lelouch' or something at the right side of the signature. Other than that, I'd recommend you to try emphasizing some of the contrast in the image (eg. shadows, high-lights), just to increase the depth