1. Press Ctrl+O to open the open dialog box, select a file, and click the open button to open the selected file;

2. Right-click the "background" layer in the layer panel and execute the "Copy Layer" command in the pop-up menu to open the "Copy Layer" dialog box. Click OK in the default dialog box to copy the background layer;

3. Open the channel panel, compare the image contrast of each channel, select the "red" channel, copy this channel to get the "red copy" channel, and hide other channels.

4. Execute the Filter │ Stylization │ Find Edge command in the menu bar. Image effect as shown in figure 3-55, and then execute the image │ adjustment │ inversion command in the menu bar.

5. Execute the Filter → Blur → Surface Blur command in the menu bar, open the Surface Blur dialog box, set the parameters as shown in Figure 3-57, and click OK;

6. execute the command image > adjustment > color code in the menu bar, open the "color code" dialog box, set the parameters as shown in figure 3-59, and click ok;

7. Hold down the Ctrl key and click the channel thumbnail of "Red Copy" in the channel panel to create a selection area, display the "RGB" channel and hide the "Red Copy" channel, and switch to the layer panel to select the "Background Copy" layer;

8. Execute the filter → artistic effect → daub painting command in the menu bar, open the "daub painting" dialog box, set the parameters as shown in Figure 3-62, and click OK.