SEO in Image Gallery Block

Hi everyone,

Does anyone know the best practice for SEO when it comes to adding alt-text to images in a Gallery Block? Is it better to put the keywords in the Image Title or Image Description? Does the Image Description affect the SEO? What are some general good practices when it comes to SEO on Gallery blocks?

I my creating my own website on fashion. In future i have to work on image part as well. Please give me a brief description on how to create a image 

@Anthony_Richardson I generally focus on image title (alt)

<img src=“image.jpg” alt=“image description” title=“image tooltip”>

Few things we do: 

1. On any page at least one image should an alt tag that contains your focus keyphrase.
2. If the information conveyed by the title attribute is relevant, consider making it available somewhere else too
3. Not game the system i.e. if we are using an image as a button to buy product X, the alt text should say: “button to buy product X.”

Hope this is helpful?