I Want To Be A Model Also

Hello,my name is katrina,im 24 years old and i have dreamed of becoming a model for a very long time.everyone i have met wonder why im not yet famous.i have portfolios and i have also been to some agents but my only problem is that im 5`4 and they have all told me i must be atleast 5`6.also most of them demand money upfront for contracts.i have been told by many people and on the tv that its just a scam.so is there anyone that can help me and others to become models without having to worry about paying large amounts of money or worry about if we are tall enough.kat