1- Try being comprehensive. For example: if it’s a restaurant, you can talk about the atmosphere, the food, the service and the prices. If it’s an electronic device, you can talk about the performance, the ease of use, the battery…etc.
2- Try being organized. Put your words into bullet points or simple short paragraphs so people can easily read them.
3- Whichever the language you’re using, trying making it as clean and as clear as possible, and avoid using Franco-Arab as much as possible.