I don't know you at all, so these are generic answers in no particular order:
Read lots of other people's poems; leave interesting and thoughtful comments.
Every time you write a poem, walk away from it and let it sit for 3-5 days, then rework it and post it. Don't post more than one poem a day - we are all busy.
Make sure you have 2-4 pictures, photographs, maps to complement the poem.
Be very, very patient. Building a "good" following takes a lot of time and work.
Don't automatically follow everybody. They may follow you back, but never read your hubs. Carefully choose people you really want to read and comment on.
Do not get discouraged, read good poetry because it will improve your work.
Good luck, although luck really has nothing to do with it. Welcome to HP. :)