You can add a Border to an image in a Google Docs document. Creating and putting a broder is very easy if you follow this procedure.

Although there isn't a direct feature to create borders on Google Docs, there are 3 workarounds that you can use to create that appearance.

How to Put Borders Around Pictures on Google Docs. Google does not offer a feature that directly supports adding borders around the images inserted into a Google Docs document, as of May 2013.

How to create templates in Google Docs Google Docs lets users create and upload custom templates, but not all users can use this feature.

How an attractive cover page can be added? You can find pre-formatted template and write on them and Google Docs has a lot of templates to make the cover page a really attractive one.