1. The file format i chose for this image was JPG, which is a common file format that is used for digital photos and digital format. When JPG files are saved, they use "lossy" compression, meaning image quality is lost as file size decreases.  The link below shows info on JPG.

http://graphicdesign.about.com/od/Definitions/g/Jpg-Files.htm

2. The size of the background image is 500 x 333. The size is important to retain the required resolution of 4x6 @ 300 p.p.i because it is the appropriate size for printing and if it was too small it wouldn't come out right.

3. My concept was basically skateboarding with scenery and the view of Philadelphia. Philly has been a big scene in skateboarding for a long time. I decided to get a background image of Love Park which is a tourist attraction in Philly and also a famous skateboarding spot. The backround image is also night time/evening which stands out more because of the lights in the city. I also got an image of professional skateboarder, Sean Malto to show the skate scene. Then i got an image of a hot air balloon which plays a role in view of the city and the background.

4. After I open up my images in Photoshop, i cropped the image of the skater and the hot air balloon using the quick selection tool. i then dragged the cropped out images onto the background to where i want them to be. I then used the quick selection tool on the Love Park logo and  used masks to put the background love park logo i quick selected and put it in front of the hot air balloon to show that it's behind in the background. I then chose my font and the appropriate size to fit in the top right corner with the colour orange to fit the night/evening vibe.