Hair curling for short hair help?

hey :)

alright so my hair is pretty short like shoulder length. i also have fine hair. i always try to curl it with a curling iron but it never works!! it just comes out crimped. i also have a straightener and i dont know how to curl with that either. i have really flat hair and i wanna do something different (particularly curls) but i dont want it to be super big curls just like soft waves like vanessa anne hudgens. please help me!!!

p.s i dont wanna go out and buy anything. are there any natural ways?

thankyou so much for your time :)Hair curling for short hair help?
start off with like almost air dryed hair NOT DAMPED . you can try taking a paper bag and rip it into 1 inch peices of stripes , then take it side ways and get a piece of your hair and roll it up into it then tie it all the way to the top at the bottom layer . then for the top layer just roll then tie it half way then go to sleep or wait or something for until it drys then undo it and you should have nice natuaral curls . good luck [=Hair curling for short hair help?
there are tons of good videos on youtube that would help ya out! :)