ok can we talk over skype?
seems like a no...
anyway: You need to choose what size it should have. 16x 32x 64x?
After that you need a picture editing programm like GIMP:
http://www.gimp.org/downloads/ Just do that and safe the pictures as .png
Download a Texture Pack and see under what name you have to safe it.
Done with this than contact me.