Require iTunes screenshots and advertising interstitials

Please submit your best price first, no further negotiation after bid. Hi, I require iTunes screenshots and advertising interstitials (Chartboost, Revmob, Applovin, etc) to be developed for 5 apps. This project needs to be completed within 3 days. Here are the links to the apps that I require iTunes Screenshots for: Aussie Outback Safari: [login to view URL] Puddle Connection: [login to view URL] Fire Fight - Defend Your Land: [login to view URL] Sports Mania Pop Match Puzzle Game: [login to view URL] Midnight Poppers: Not released yet – (Screenshots of the game will be sent via dropbox when project has been awarded). The iTunes screenshots and advertising interstitials need to be of a highly quality that will grab the attention of the user and show off the app best benefits and features. The screenshots need to be suitable for iPhone 4, iPhone 5 and iPad. The advertising interstitials need to be suitable for ad networks (Chartboost, Revmob, Applovin, etc). To be considered for this project please develop 2 to 3 samples from one of the above apps so I can see your creativity and skills. Please send examples of your previous iTunes screenshots and advertising interstitials design work, plus links to apps you have designed screenshots for that are currently in the app store. You will have at least 100 hours on Freelancer. Have a minimum 4.5+ star rating and be someone who takes pride in their work and makes polished looking products. You need to be able to speak English well. Please submit your best price first, no further negotiation after bid. I will only award bids that are a fixed price. Milestones will be paid as follows: 1st Milestone - 20% of fixed price; 2nd Milestone - 40% of fixed price; and 3rd Milestone - 40% of fixed price. *Please also start your application with a couple sentences on why you think you would do a good job at creating the iTunes screenshots and advertising interstitials. 
 ** Please submit your best price first no further negotiation after bid. 
*** Please write "Cowboy Jack" in your first line for me to know that you took your time to read this post. 

 Looking forward to hearing from you!