When you want to sell something, show the real thing and show the proof it is good. A photo of your actual work, or of your place already busy, beats any tidy designed graphic, because people believe what looks real and doubt what looks like an advert.
Start with the actual thing. If you are selling a bouquet, show that bouquet, not a heart graphic with “Happy Valentine’s” on it. People want what they can already picture themselves being handed. A designed template says “this is an advert”. A true photo of the real product says “this is what you will actually get”, and that is what moves someone to buy.
Now add proof that others want it, because that is the strongest nudge of all. In a well-known street experiment, the more people stood looking up at a building, the more passers-by stopped to look too; a small crowd pulled in a bigger one, with no words at all (Milgram, Bickman and Berkowitz, Note on the drawing power of crowds of different size, Journal of Personality and Social Psychology). A photo of your place already busy does the same job. It tells the person still deciding that this is where everyone is, so it must be worth it.
St Patrick’s Day is a good example. People come out to be part of something, so a photo of your pub already full does more than any promise about the drinks. You can see this on the St Patrick’s Day run-up: show the room busy and the person still at home decides that is where the night is.
So build your selling posts from real material. The tray of pastries that actually came out this morning. The queue at lunchtime. The finished bathroom, photographed properly. The regular grinning over their order, with their blessing. A review someone left, screenshotted plainly. Each of these is proof, and proof beats polish.
This does not mean the photo has to be perfect. It means it has to be true. A slightly rough photo of a real busy Saturday sells better than a flawless graphic, because the rough one is clearly not staged. You are not competing on production values. You are showing evidence, and a phone photo of the real thing is evidence enough.
A café learns this fast. A designed poster of a coffee with “best brew in town” convinces nobody, because anyone can write that. A quick photo of the morning queue out the door says the same thing without a word, and this time people believe it, because it plainly happened and no shop can fake a queue that is not there.
A caution. Proof has to be honest. Do not borrow a stock photo of someone else’s crowded café, do not use a picture of a product you cannot actually deliver, and always ask before you feature a customer’s face or their words. Fake proof is worse than none, because when the real thing does not match the picture, you have taught people not to trust you.
The short version: sell with proof, not with graphics. Show the actual product people will get, and show that other people already want it, the busy room, the queue, the honest review. Real beats polished every time, because people trust what plainly happened over anything that looks designed to sell them.
Turn your own proof, the busy lunch, the finished job, the happy regular, into a post in What should I post?.