Homescreen HELP


edit: if it matters im using an LG Optimus - version 2.2.1, model number LG-p500h
note: im not very technical smart.

ok so i have been trying to make my homescreen look like this: but i cant figure it out.

the first problem is when i set the wallpaper its to big, i can only see the middle of it ( the cropping tool when your setting the wallpaper wont cover the whole picture )

my power control plus on 4x1 is thicker then the one in the picture?

also in the comments they are talking about using a "gnote" what is this?? and how can it help me??

basically i need someone to walk me through every step because i cant even figure out the baisc parts