i have some ideas in my head about some new pieces, but i cant write them on paper. problem is how to decide in which measure put it, and all things what go with... if somebody knows how to learn it, please tell me

gosh you really are a dumb blond!!!just joking,nobody will be able to tell you "how to compose"why else do you think you must study years and years to do it fluidly;FIRST=find the key on the piano(because dumb blonds don`t have perfect ears)SECOND=feel the pulse;bin.ter.is it 1 2 1 2 or
1 2 3 and 1 2 3 this should be easy,next try to define the up beat to fix the first bar;and you`re in bizness.i don`t think i helped you a lot,why don`t you just read a book?i can assure you even dumb blonds can read books!!!!!!