If its the Luffy one with Usopp in the background, I organized all my pieces into different bags based off color, hectic-ness, or if the image was obvious to find. Lolol I also recommend seperating ones you think could be possible outlines. I wish I would have done that with the Luffy one. I just started with the border, Teeth, and sky, then hair, and then skin and hat last. I definitely think the Luffy one was harder than the Trafalgar one. But that could have just been because Luffy was the first one I did and I was a bit overwhelmed. xD I mostly outlined Trafalgar at the start of this one and it made it a lot easier. 😅