when i put this code in I get everything I want but I don't see my character icons.Can anyone help me.THis is my code.HELP

world
mob = /mob/create_character //set the default mob to create_character, as to make the selection stuff happen

mob
monkey //we are playing God here! let's create a monkey
icon = 'monkey.dmi' //the monkey will look like this
mob
human
icon = 'human.dmi' //this is what it will look like. quite ugly, no?
mob/create_character //the default mob
var/mob/character //later we'll be switching client to this
Login()
var/charactername = input("What is your name?","Name",src.key) //you should know this..
switch(input("WHAT RACE?") in list("monkey","human"))
if("monkey") //if they chose to be a monkey
character = new /mob/monkey() //make the new character a monkey!
if("human") //if they wanna be human,
character = new /mob/human() //make them one!
character.name = charactername //set the name
src.client.mob = character //now, we change the player to this newly defined mob!
del(src) //delete the old mob