In one sentence, describe what the following article is about:

Don’t worry so much about grammar and spelling at this point. The message is what matters, and once you get that down you can go over the letter and fix any errors. Your letter is a confession of sorts on how you feel, and right now you want to focus on being completely honest and open about how you feel and why.  Take your time and don’t rush. If this is the first love letter you have ever written, then keep that in mind. There is a learning curve for everything, so accept that you may have some difficulties or make mistakes. Use your own voice to express how you feel. Don’t imitate the way someone else writes or speaks. You want this message to be uniquely yours and to reach your partner the way only you can. It must be sincere and reflect the real you on paper. Keep your partner in mind as you write your letter as well as the level of your relationship. Declaring your love to someone for the first time will probably be a little different on paper than writing a letter to your wife of 20 years. Remember to state your love somewhere in the letter. A simple "I love you" works just fine. Tell your beloved why you are writing the letter. You want to be clear that this is a love letter right away. Think about what led you to decide to write the letter. You can say something like, “I’ve been thinking a lot lately how much I love you, and I want you to know how much I cherish you.” Don’t insult your lover or depreciate yourself or your feelings in the letter. Be confident about how you feel and what you are saying to avoid confusion. This is where your memories, stories and all the things you appreciate about your partner will come in handy. Tell your lover what you love about them, why you love them, how they make you feel and remind them of a story that is unique to your relationship. Tell him or her how your life has changed for the better, and how your life would be incomplete without them in it.  The goal of the love letter is to express very deep feelings that you have a hard time conveying in person. Take this opportunity to say more than you usually say and to take it to a deeper level. Use the ideas you jotted down earlier to guide you. If you don’t write poetry, consider including a poem from a favorite poet or a quote that expresses more of what you’re trying to say. Always give the writer credit to avoid looking like you tried to steal it and trick your partner into believing it was yours. If you want to be cheesy, go ahead. Just be authentic, and if your partner loves you, he or she will love your letter too. Everything you are writing is probably going to be saved. Avoid bringing up negative things in the letter as much as possible. Don’t be critical or indecisive either. This is your chance to tell your love how great they make you feel and how awesome your life is with them in it, not to go over your mistakes or rehash bad history.  A good way to keep your letter positive is to talk about how you feel right now. Yes, you want to go over those special stories about how you fell in love but you also want to be sure your partner knows that you still feel strongly for them or even more so. Try something like, “Now, a decade later, I still get butterflies when you smile at me,” or "I love you more now than I ever have before." Talk about the future you hope to have together. Remind them how important your relationship is and how long you want it to last. Tell them your level of commitment, and if nothing will stand in the way of your love, faithfulness and devotion, let them know. Describe what forever means to you and what it looks like with your partner in it. You want to end your love letter positively. You can end with a statement that briefly describes how you feel about your love. You can write something like, “I hope to dream of you tonight,” or “I can’t wait to spend the rest of my life with you.”

Summary:
Write a rough draft. Start at the beginning. Write the body. Be positive. Reiterate your commitment. Close your letter.