How Can I Change The Back Ground Of My Photos?

you take a photo of yourself, you look great but the background is not good? I've been in this situation before and i found the solution,  i changed all the background that i didnt like and i was great 
i use photo instrumental to fix everything i didnt like look at this photo for exemple 

yup much younger, you can do this using photo instrumental

and for the background changing GIMP 2 is so great and easy

you can download them for free from here

just go to DOWNLOAD page