If you have gotten any dirt on your canvas, gently hand wash to remove. Canvas is often pulled out of shape when stitched. If it's only slightly distorted, a light steaming will do the trick before framing - place face down on a clean cloth and iron using a light stream. 'Blocking' is the term used for stretching your canvas back to shape. Simply dampen with a water spray. Draw the outline on blotting paper pinned to a board. Carefully pin your stitched piece, face down, pinning just outside the edge of the stitching. Wait for this to dry - it may take a couple of days. Now you can make up your finished item.