Here are some excellent techniques for "designing" your adwords ads.

Use keywords in your headline. GooglePuts them in boldface and that helps yourAd grab reader. Egoists and narcissists please Note: The name of ANY business makes a LOUSY HEADLINE. Your click-thru rate will be low, and bid prices will be high.That's because your ad is about your Company, not about what your customer wants. Your ad needs to be about your Customer, not YOU.

Use keywords also in lines 2 and 3 Wherever possible.
Speaking of lines 2 and 3, it's O.K. to run lines 2 and 3 together into one sentence. Or all 3 lines, for that matter.

In your headline, Capitalize The First Letter Of Every Word. But avoid ALL CAPS.
A single word change in your headline can make the click-thru rate go from .07% to 5%!

Use numbers whenever possible.Wrong: Make lots of money.Right: Make $847/week

Note the difference between features And benefits. Features describe. Benefits answer the question: What's in it for me.For example, with your widget: FeaturesInclude yellow, strong, etc. CorrespondingBenefits include easy to find when youNeed it, will last longList all the features, then list all theCorresponding benefits. In your ad copy,Focus on the benefits.
To begin writing, put the major benefit Into a short sentence.
Then hone it down,Deleting excess words. E.g. Will last a long time vs longlasting

Be specific so you don't get random Clicks. Wrong: tennis Right: antique tennis racquets
Delete unnecessary words like a, an, On, the, etc.
Use attention-grabbing words like free, New, etc.

When you do use the word "free," do not capitalize all the letters, and don't use an exclamation point after the word.
Use action verbs (discover, retire, boost, increase, avoid, uncover, eliminate, prevent, etc.

Use active (vs passive) voice. Wrong: Discount shoes to be discovered Right: Discover discount shoes

Use emotional words (cheap, sale, limited time, don't lose out, easy, quick, powerful, etc.)Use motivational words. "Now is your chance" "Weight loss secrets you should know", "Discover your potential", "Tips you can use to make money now"

Avoid crazy punctuation and wild Claims.

Show how your product/service isUnique (faster, wider variety, discount, most comprehensive, lowest price, etc)

Use call-to-action phrases
Buy today, Save 50%, download free trial now, sale ends tomorrow, buy Today-save 70% offer ends soon, Hurry before they're gone

Learn to steal. Yes, you read that right.All the top copywriters do it. That is, study good examples from other advertisers and substitute your own wording. Better yet, keep a collection of strong words and phrases.

Discourage freebie hunters by including a price.Including the price actually increases clicks and sales.

By the way, the word "free" increases clicks. This refers to a free sample, which leads reader eventually to a sale.

Always test 2 ads simultaneously. When you have a hit, try to beat it with another version (called "beat the control" in advertising lingo).Google will automatically rotate your 2 versions. Keep the better performing one, then try to defeat it with an even more profitable ad.