Any link in a tweet (that has a picture attached) will be uploaded to your Flickr account
If
New link by you
This Trigger fires for every link you tweet. If your tweet has multiple links, it will fire multiple times.
Then
Upload public photo from URL
This Action will upload a new public photo, from a given URL to an image, to your Flickr photostream.
Explore more great ways to automate Twitter and Flickr