skilling fletching

[Magrim]

I picked up my first trade skill and i noticed I can't seem to level above 40 fletching skill. Is it just bad luck, I'm following the guide and tried the next thing higher from what i was suppose to be using.

I'm level 18 is it somewhat based on level? I went to warrior trainer to see if I could skill it up and it said you need "advanced" fletching or something like that to gain skill.