Answer:
Try writing lines that have rhyming words at the end
like
I want it to SNOW
so I don't have to GO
then try two more lines with end rhymes, that fit with the story you started with the first two lines. The next two don't have to rhyme with the first ones, just with each other.
The trick is to find some good words that rhyme that you can also fit into kind of a story that way. It takes time and work, but it's worth it to have your own poem. :)