To get the picture I’m using click here.
Open up the picture in Photofiltre. Click Ctrl-A and Ctrl-C to copy the whole picture.
Then go to Edit>>Paste Special>>Assemble. Assemble it to the right.
Now take the selection tool and use the rectangle setting and make a selection around the picture that you just pasted. And make sure it is exact!
Now click this button.
Now you can add text, effects, brushes, etc. To make the same coloring effect, click here.