Don't worry about being in a designated place of prayer, instead find that place within you where stillness sits. In my opinion, that's the best prayer house on this earth.
And please don't worry about what you're wearing or if your hair looks good. Just say a little prayer. Or a long prayer. It's up to you. Make your prayer personal to you. I don't believe we can influence others in our prayers, but we can seek to enhance our lives. So you can't pray for David Beckham or Kelly Brook to fall in love with you, but you can pray for a happy, healthy relationship with someone kind, compassionate and thoughtful (insert any words of your choice here!) who loves and respects you.
Next, please don't get upset if it doesn't happen straight away. That will only serve to diminish your trust. While you wait for your prayer to be answered, you must have trust that it's in the process of being delivered.
I suggest that those are the very feelings we should to aim to cultivate in our lives, and if we imbue our prayers with those feelings, we'll see miracles happening every day all around us.
I don't know if my beautiful friend did say a prayer after all, but I said one asking for my heart to stay open and loving.