Article Status Workflow

In the portal, there was a flow like if any user requests his article to publish. That information will be saved in the list KBArticle, with relevant info under columns Article Status, Review Status

Now requirement is as follows

1)If Article is UnderReview, email has to be triggered to the article owner, notification has to be displayed to wait for publishing of his article.

2) In case Article Status becomes Ready for Publish, email has to be triggered to article owner, notification has to be displayed to user to wait for getting published

3)In case if article is Published, email has to be triggered to article owner and to contributor of the list

Article Status workflow has been created with SharePoint Designer 2010 by setting the actions, conditions as below

If CurrentItem:ArticleStatus equals UnderReview Email CurrentItem:CreatedBy

then wait for ArticleStatus toequal Published

Else if CurrentItem : ArticleStatus equals ReadyforPublish Email KBArticleOwner

then wait for ArticleStatus toequal Published

Else if CurrentItem : ArticleStatus equals Published Email KBArticleContributor; KBArticleOwner