...Don't compare your wedding to anyone else's. Don't worry about what other people think. The people who matter are the ones who care about one thing--seeing you two get married.
Don't let your budget discourage you. Don't feel like you can't have a great wedding without the expensive stuff. In the end, those are just things. What lasts is your love.
Don't sweat the small stuff. In the end, you won't remember any of it.
Don't let yourself think it's all about you. It's not. It's about your love. There's a difference.
Don't let money limit what you can do. I'm not saying you you'll be able to afford everything. You're only really limited by your strength of your imagination, and that -- if you allow it-- is boundless.
Do remember a "good" wedding is determined by the love and commitment you have for one another. You can never put a price tag on that.