As of the latest update, sadly, no.
u cant
It is currently impossible to change your skin in Minecraft Pocket Edition unless if you Jailbreak your device.
It is currently impossible to load a Texture Pack on Minecraft Pocket Edition unless if you Jailbreak your device.
Yes there is signs in Minecraft Pocket edition
you cant have a minecraft pocket edition username
No, they are no enderman in Pocket Edition of Minecraft 0.8.1
Yes, there are villages in the updated Minecraft Pocket Edition.
When would Minecraft Pocket Edition 12.1 going to be out
As of Pocket Edition 0.3.0, cows have been part of Minecraft Pocket Edition. If you have that version or above, then there should be cows.
Do not think so.
Minecraft Pocket Edition costs $6.99 in the Google Playstore or the Appstore.
You can not get minecarts on minecraft pocket edition. Also, minecarts are not planned for the next update.