Well, first learn an instrument or to sing. You're putting the cart WAAAY before the horse. Patience, young grasshopper. If you have some lyrics you like, maybe find a songwriting partner. Otherwise, get a copy of "Songwriting for Dummies" for a crash course.
songs are like poetry, but with songs you can be a lot simpler in word choice yet complex in meaning. with poetry, it's a bit rigid as in if you don't use the right words, it ruins the poem... it ruins the feel of it. concentrate on making the audience feel a certain way when writing. She'd waltz across dreamlike paintings, and as their colors fused, her shadow Smeared the canvas, but her footsteps followed the rhythm of falling rain
1. there has to be a theme throughout the song. so it makes sense. 2. it doesn't have to rhyme. here, in this poem, you can see that the use of PAUSES at certain places makes up for the fact that there is no alliteration, onomatopoeia, rhyming, and so on... you can do that with singing. any sentence can sound like music if sung correctly, but try to make it... artsy 3. look at other songs... study every small aspect of them