Step 1. Open the file you desire to convert into PDF.
Step 2. Go to 'File' then 'Save As'. Change the format of the image to 'Photoshop PDF' then save.
Step 3. A dialogue box will appear. Click 'OK'.
Step 4. In this dialogue box you can change the settings of the compression, output, and security of your PDF document.
General. Here you can choose the compatibility of your document with different versions of Acrobat. I choose 'Acrobat 5 (PDF 1.4)' since it is compatible up to the latest version of Acrobat - Acrobat 12. Next is the 'Option' box, (a) Preserve Photoshop Editing Capabilities will let you open and edit the entire PDF document; (b) Embed Page Thumbnails will let you put Thumbnails into the document. (c) Optimize for Fast Web Preview will make it easier to load in the web; and (d) View PDF After Saving.
Step 5. Compression. Here you can change the the file size, the compression and the quality of the image. (a) You can set your desired number of pixels/inch depending on where and how you are going to use the PDF document; (b) Image quality to minimum, low medium, high, maximum.
Step 6. Output. With this settings you can convert the color space of your PDF document.
Step 7. Security. This where you can add password to your PDF documents in order to protect it.
First, you can require a password to open the document. Second, you can restrict printing, editing and other task with a password. Take note that both password should be different.
Step 8. When satisfied with all the changes in the settings click 'Save PDF'.
Here is the PDF version of my file : https://drive.google.com/file/d/0B_IIEICJ5hhQNU1YNE9uby1TRFU/edit?usp=sharing
