You can use paint.net to add cool effects inot photos
I will be showing you how to put cool motion effects into photos.
First open your picture in Paint.NET.
Then create a new layer and carefuly with the line tool draw around your image.
Then select inside the lines with the magic wand tool.
Now delete the layer with the lines on it and the selection should be left on the biker ( or whatever image you choose ).
Copy the new selection and then deselect it. Then motion blur the image in the opposite direction that the subject is travelling at about 25.
Then paste the copied image that should align itself and there you are
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