7. Create an app in iTunes Connect

Pre-requisites:

Create an App in iTunes Connect

1. Connect to your iTunes Connect account
https://itunesconnect.apple.com

2. Select "My Apps" in iTunes Connect

3. Click on the "+" button

4. Select "New App"

5. Select "Platform" as iOS
6. Select your "App" default language
7. Enter your "App Name", this the name that will be display in the AppStore
8. Select the Bundle ID you have created earlier.
9. Create a SKU number, this can be any alphanumeric value of your choice.

10. Click Create
11. In the App Information menu, select the category and secondary category (optional) that best describes the App.

12. You can sell you app by selecting the tier you would like to apply (Click on "Choose" for more details in Pricing and Availablity menu) or if your App will be free, select "Free".

13. You can target specific country by clicking on "Availability", by default your app will be available in app store territories worldwide.
14. Select the volume purchase option if you want your app to be offered at a discount to educational institutions when they purchase multiple copies at once. The details of the discount are found in the latest Paid Application Agreement, which you must sign before this app will be available to education customers.
15. Select the "Prepare for Submission" menu.
16. Enter your App version, the numbering should follow typical software versioning conventions (for example, 1.0 or 1.0.1 or 1.1).
17. Enter the name of the person or entity that owns the exclusive rights to the app, preceded by the year the rights were obtained (for example, "2013 Quark Software Inc").
18. MetaData Section:

A URL with information about the app you are adding. If provided, this will be visible to customers on the App Store.
Description: A description of the app you are adding, detailing features and functionality. Descriptions cannot be longer than 4000 characters.
Keyword: One or more keywords that describe the app you are adding. When users search the App Store, the terms they enter are matched with keywords to return more accurate results. Separate multiple keywords with commas. Keywords cannot be edited once your binary is in review and cannot be longer than 100 characters.
Marketing URL (Optional): A URL with information about the app you are adding. If provided, this will be visible to customers on the App Store.
Privacy Policy URL (Optional): A URL that links to your company's privacy policy. Privacy policies are recommended for all apps collecting user or device related data, and required for apps that offer auto-renewable or are designed for kids. or free subscriptions, or as otherwise required by law.

19. "Contact Information" Section. You will need to provide contact details of the person in your organization who should be contacted if the App Review team has any questions or needs additional information.

20. Select the version release option when App will become available on the App Store.

21. "Upload" section

Content Name	Description
Large App Icon	A large version of your app icon that will be used on the App Store. It must be at least 72 DPI, in the RGB colour space, and 1024 x 1024 pixels (it cannot be scaled up). The file type must be .jpeg, .jpg, .tif, .tiff, or .png. It must be flat artwork without rounded corners.
3.5-inch Retina Display Screenshot	Screenshots for 3.5-inch iPhone and iPod touch Retina display must be 960x640, 960x600, 640x960 or 640x920 pixels, at least 72 DPI, in the RGB colour space, and in the JPG or PNG format.
4 inch Retina Display Screenshot	Screenshots for 4-inch iPhone 5 and iPod touch (5th generation) Retina display must be 1136x640, 1136x600, 640x1136 or 640x1096 pixels, at least 72 DPI, in the RGB colour space, and in the JPG or PNG format.
4.7-inch Retina Screenshot	Screenshots for iPhone 6 must be 1334x750, 750x1334 pixels, at least 72 DPI, in the RGB colour space, and in the JPEG or PNG format.
5.5-inch Retina Screenshot	Screenshots for iPhone 6+ Retina display must be 1242x2208, 2208x1242 pixels, at least 72 DPI, in the RGB colour space, and in the JPEG or PNG format.
iPad Screenshot	iPad Screenshots must be in the JPEG or PNG format, with sizes 1024x768, 1024x748, 768x1024, 768x1004, 2048x1536, 2048x1496, 1536x2048 or 1536x2008 pixels, at least 72 DPI, and in the RGB colour space.
Routine App Coverage File (Optional)	Routing app coverage files are .geojson files which specify the geographic regions supported by your app. The file can have only one MultiPolygon element. MultiPolygon elements consist of at least one Polygon. Polygons contain at least four coordinate points. Polygon start and end coordinate points must be the same.

For more information, please refer: https://developer.apple.com/library/ios/documentation/LanguagesUtilities/Conceptual/iTunesConnect_Guide/Chapters/CreatingiTunesConnectRecord.html