a very simple approach would be to create a basic flow of the process and then save them as an image. Create one image for each stage in the process. And then depending on what Stage you are you can show or hide the images.
In my opinion the best approach would be to use the status indicator component on a form segment. With the status indicator you can show different images depending on the value of a configured status processdata variable.
0. Create a new segment
1. Draw a line
2. Say you have 3 stages you want to show, add 3 status indicator components and move them on the line so it looks nice.
3. Now assign the same integer (intFolderStatus) variable to your 3 status indicator components and configure the threshold values
4. In your process set this integer variable accordingly to the configured threshold values to show images you like.
5. Add the segment on your stage form(s)
Now when the values change as the folder moves through the process the status indicator change too and it is more obvious where you are in the process.
Hope this helps.