How do I add text to a background item in a picture?

Question:I know how to add text to a picture. But what I would like to do is add "graffiti" to something in the background of the photo to make it look like it belongs. For example, I have this picture of a couple I did engagement photos for. They're standing in the forest  covered with graffiti. I've removed the graffiti but I'd like to add something to it like "Guy and Girl 2012" or whatever. I want it to look like it was actually written on the picture. I don't have Photoshop (lame I know) so I'd need a program I can use or download online. If it is free that would be the best solution.

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Solution: Here is free online downloading software named VeryPDF ShareShot.

This is a suit of totally free online software. It can extract fonts styles in your Windows system automatically. So If you can download some graffiti fonts to computer,you can add them to image file. In the following part, I will take a random wedding picture file for example.

  • Please go to Shareshot webpage first to know more about this software.
  • Download Shareshot to computer and install it like other GUI software.
  • If installation finishes, there should be one icon on the desktop. Double click it, it will be shown at the right corner of screen.
  • Double click it to enter its setting menu option. Know a little bit more from the following snapshot of software interface.

menu option of Shareshot
             Fig. 1.  menu option of Shareshot

  • Please make sure choose Open in image editor.
  • In the General menu option, you can set hotkeys for using.
  • If use the hotkeys as default, please press Print on the keyboard.
  • Now you can screenshot  the area you need and the size of image will be show automatically.
  • Then the image file will be shown in the image editor like the following snapshot.

example for adding graffiti on image
        Fig. 2. example for adding graffiti on image

By this software, not only you can add graffiti on image but also you can edit many kinds of image. After adding, you can either save it locally or upload in online by clicking Share.