This would be easy, yet very pretty. Although it might not be that smooth since I wouldn't want to use fondant. But with your flowers and a forest/hunter green ribbon. Pretty. It could be on a round cake too.
Go for chocolate. If you love chocolate, order it! It doesn't have to be frosted in white buttercream to count as a wedding cake. Choose creamy chocolate buttercream, smooth ganache or opt for fondant or chocolate marzipan.