When sharing good things, you can add three keywords in the following ways:

1. Title: Add keywords to the title of the sharing. Make sure that the keywords can accurately describe the characteristics and highlights of the good things and attract the attention of readers. For example, if you are sharing a skin care product, you can add keywords such as "skin care", "beauty", "moisturizing" and so on in the title.

2. Description and introduction: Insert keywords in the description and introduction of the shared content in a natural and smooth way. In describing the functions, advantages, and usage of the good things, organically use keywords to provide relevant information. For example, if you are sharing a smart watch, you can mention keywords such as "health monitoring", "sports tracking", and "smart notification" in the introduction.

3. Tags and keyword clouds: If the platform supports tags or keyword cloud functions, you can add keywords to the tags or keyword clouds. This can help other users search for your good things more conveniently. Select keywords related to the good things and add them to the tags or keyword clouds to increase the exposure and searchability of the good things shared.

Remember, the choice of keywords should be relevant to the content of the good things you share, and keep it natural and meaningful. Avoid excessive keyword stacking, so as not to give readers a bad experience. The key point is to provide valuable information and accurate descriptions to make readers interested in and trust the good things.