hide files in a image using cmd

I will show you how to hide files inside a picture file. They are almost undetectable, and can be made very hard to get.

You will need these things:
1) A picture to hide stuff in
2) Files to be hidden
3) A file compression software (I use 7-zip, which you can get here)
4) Command Prompt

UPDATE
You can not only hide files in pictures, but music files, videos, and just about anything else.

Step 1: Compressing the Files

The first thing you will do is make a new folder on the C drive. I will call this folder "x". Inside this folder, place the files to be hidden and the picture that will hide everything. The picture that will hide everything in it cannot have any spaces in the name, so I called it "Picture".