A man should know how to compliment a woman's appearance. But ask the nearest lady, and she'll tell you that when it does happen, it too often sounds like an oafish come-on. It shouldn't need to be said—but we will anyway—that focusing all the attention on her sexuality is out of line. The art of the compliment is not a free pass to get suggestive; it's an opportunity to make her feel great about herself. Here's how:
Say it right away. This particular brand of admiration is appearance-based. So as soon as you see her, tell her how lovely she is. Wait too long, and it'll seem like you're searching for something to say.
Don't use a 5-cent word. Avoid anything even remotely similar to hot, sexy, smoking, etc. Don't make her feel like a piece of meat. At worst, it's offensive; at best, it displays a glaring lack of creativity. Women are objectified enough as it is. Be the exception. And for God's sake, don't say she looks "nice." It's like telling a guy he's "cute"—the most mediocre praise.
Don't use a 50-cent word. Steer clear of words like ravishing. Beyond the term's sometimes vulgar connotation, it's also a measure of grandiloquence that's probably best reserved for your poetic efforts. Instead, opt for something simple yet charming. Beautiful, lovely, glowing, wonderful, stunning, gorgeous, and terrific are all appropriate; pick one that feels natural.