Step 1: What You Will Need
1. Photoshop (CS5 version is used in this tutorial)
2. Microsoft Office Picture Manager
3. A scanned picture
The sample picture used in this tutorial has been posted in this step.
Step 2: Convert to Png
Therefore, you need to convert it to a loseless format. I recommend png because it takes less space than other loseless formats. To do so, open your Photoshop and drag the jpg file to the Photoshop window and Photoshop will open that picture automatically.
Now, go to File -> Save As, type the file name, select the file type to be png, and click “Save”, you will see a window that looks like the picture in this step.
Select “None” and click “OK”, wait until it is done.
Now, close the jpg picture and open the png picture that you just saved. You may delete the original jpg picture if you want.
Step 3: Learn to Use Clone Stamp Tool
On your left hand side of Photoshop, you can see a toolbar. On the toolbar, select the red circled icon shown in the picture.
Now select “Clone Stamp Tool”. Hold Alt and click where you want to copy from, and then click where you want to copy to. Click or drag your mouse to start copying, if you are not satisfied with what you get, press Ctrl and Alt and Z simultaneously to go back. Right click on anywhere of the picture to adjust the size of your copying area and hardness, if you are unsure about what value you should use for hardness, I recommend you to use 30%. In addition, opacity and flow can be adjusted on top of the window, start both from 50% and change them gradually to get what you like. You should practice this tool a lot until you are familiar with it.
Step 4: Learn to Use Brush Tool and Pencil Tool
Brush tool can be easily used for drawing lines, just be aware that you can adjust opacity and flow like you did for clone stamp tool. In addition, if you hold Alt and click on anywhere on the picture, the color of brush tool will become the same as the point you clicked on, this is quite useful for fixing pictures.
Pencil tool works about the same as brush tool, you can select it from where you selected brush tool, be aware that the pattern of lines drawn by pencil tool is very different than that of brush tool.
Step 5: Learn to Use Mixer Brush Tool
To select it, select the red circled icon shown in the image, this is the same place where you select your brush tool and pencil tool.
Like I said, it mixes colors, but it does not do it randomly, it actually mixes the color from where you originally clicked to where you dragged your cursor to.
Step 6: Fix Creases or Gaps
Fixing creases is about the same as fixing gaps. In comparison, fixing creases is simpler because you will not have to guess what is missing.
Step 7: Remove Text / Detext
Step 8: Crop the Picture
Cropping a picture can be done in Microsoft Office Picture Manager instead of Photoshop, because it is simpler and more convenient.
Microsoft Office Picture Manager comes with Microsoft Office 2010 and any newer version, so it is very accessible, after opening your picture with this software, go to Picture->Crop, and select the area you need, for better precision, zoom in and out by holding Ctrl and use the mouse scroll wheel. Note that a scanned picture is usually not perfect aligned, so you will need to consider both sides of a picture. The two pictures for this step demonstrate what you might find when cropping, the left side seems to be perfect aligned, but if you go to the other side it is not the case.