On minecraft PE version 0.4.0 Ios 6.0.0 I can not download a texture pack change my skin or what my items look like

See:

iOS: Troubleshooting applications purchased from the App Store

Also go to the developer's support site. Some apps just are mot compatible with iOS 6 and you may have to wait for an app update.

BTW, it is hard to read the large font you used.

You Can Only Change Texture Packs In Minecraft P.E 6.0.0 The Skins Is In Dev Mode Right Now If You Want A Skin It Will Be A Hack For Now But It Will Efect Your Mutiplayer it Will Make Them have The Same Skin As You.If You Want A Skin In Hack Mode Or Dev Mode YOu Need A Mac