21. Next, we want to increase the contrast to cause the remaining artifacts of the unwanted orange pixels to fade away. Click Layer > New Adjustment Layer > Brightness/Contrast. View the QuickTime® movie below to see how to make the adjustment.
22. Below is the result of the Levels and Brightness/Contrast adjustments.
23. Next, drag out a guide to divide the image in half. We only need to trace half of the image because it is symmetrical. View the QuickTime® movie below to see how to drag out a guide.
24. Next we want to select the right half of the image and copy it, then paste it as a new image. Start by making the selection. View the QuickTime® movie below to see how to make the selection.
25. Once you have made the selection, click Edit > Copy Merged. This will copy the image data into the clipboard. You can also use the keyboard shortcut Ctrl + Shift + C (Windows®) or Cmd + Shift + C (Macintosh®).
Tip: Use Copy Merged when you want to copy what you see in the document window. It is a composite of all the visible layers. Using Copy by itself it would only copy the pixels of the active layer, not necessarily what you see in the document window.
26. Next click File > New. Just accept the image specifications in the new document window and click the "OK" button.
Note: When you click File > New after having copied data into the clipboard, Photoshop® knows the specifications to make the image.
27. Depending on the background contents in the New image dialog, you will see a new document window. In this example the window has a transparent background (below left). Next, click Edit > Paste or Ctrl + V (Windows®) or Cmd + V (Macintosh®). The new image will appear in the document window. At this point, click File > Save and give it a file name to save the file to disk.
28. Below is a screenshot of the butterfly half image. In this project I cropped the image a little bit more to remove all unnecessary pixels for tracing with Adobe® Streamline®. Make a selection with the Rectangular Selection Tool then click Image > Crop.
29. Below is a screenshot of the cropped image.
30. I'm still not happy with the contrast so I am going to bump it up just a bit more. Click Layer > New Adjustment Layer > Brightness/Contrast. This time I set the Brightness to +8 and the Contrast to +29.
