Help,please!, in making a banner... Options

[Lady Serenity]

um,yeah,well,i am trying to make a banner(or maybe a picture?) for a friend of mines...and i don't know how to!!I was wondering if someone can make me one...erm,itz going to be like a best friend kind of banner(or a picture,im sorry,im not good at this stuff!and i have never done this before either...)if u know how to and if u'd like to help than plz reply!!!it'll be a big help!!if u don't want to than...well,itz ok..i understand!^_^