Create a professional, eye-catching eBook cover titled 'Sell Like a Wolf: Jordan Belfort's Proven Techniques'. Use a background image that represents success in sales or Wall Street, with a color palette of dark blue, black and gold. The title should be in an elegant, legible font, centered at the top of the cover, with the subtitle (if included) directly below. Add a small icon related to sales or finance and place the author's name at the bottom of the cover. The design must be clean and professional." in Portuguese

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