The questions to ask are: How will you gain customers? How will you keep them? How will you grow them? The right message (informative, emotional, etc) in the right channels (Television, Social Media, Radio, Brochures, Influencers, etc) at the right time (Frequency, Schedule) are essential. On this basic, advertisements should be relevant, direct to the point, attention-grabbing, and can communicate the (unique) value proposition