w, you should have your image saved as a .jpg file.
However, please note that the .crw format is a proprietary RAW format by Canon, and it is not simply a conversion process from .jpg. Generally, .crw files are created by Canon cameras when capturing images, not by converting from other formats. If you're trying to prepare a .jpg for use in a .crw workflow, you might need to rethink the intended workflow as it's typically the other way around (converting RAW to JPG, not JPG to RAW).
