Yes, by all means get creative! Focus on the veggies, use fruit as a sweetener only, it's too concentrated and chock full of sugars.
Every juice needs a "base"... then complimentary flavors from there. Lemon will act as a preservative in case you want to save some. 1/2 lemon for every... 12 ounces of juice or so.
So... make a base of carrot for example. Now... flavoring can be Beet (sweetens, and makes a pretty purple!) or Apple. Then you can spice it with basil leaves, spinich, ginger, celery, ect.
Don't get carried away with citrus. It doesn't mix well with the veggies. Keep drinks "like minded" in type. Apple is about the only fruit that compliments the veggies in a healthy way. There's something that happens during digestion that affects how your body absorbs it when mixed... I can't remember which. Also, no milk within 2 hours of carrot juice. Again, it's something to do with how the body digests it. I wish I could remember the details! It goes down to how how vitamin C works with vitamin A or D... they don't compliment each other and end up canceling each other out I think... like a chemical reaction I think.
This site is handy...
The "Mean Green" recipe is a good "base" drink, for example, you can make one fruit juice per day, in the morning or for a mid afternoon sugar rush. That leaves 5-7 other juices you need for the day, plus a liter or two of water per day, to make it a diet. Every 2 hours or less you need to "eat" something. 3 juices a day only works with solid food two, again, something in your belly every 2 hours. You've become a "grazer".
Rotate the juices, start the day with mean green, then a carrot, then another mean green, then something based on cucumber or whatever, then the fruit, then another mean green. Munch on unsalted trailmix or mixed nuts or something in between if your stomach gets upset. Or a whole carrot, peeled. Gluten free breads. Gluten is terrible stuff. A friend of mine lost 20 pounds simply by removing gluten.
The normal American diet has become SO concentrated with fats and oils and processed (or "refined") gluten and such that it's no wonder it's so easy to get fat. Body builders eat concentrated protein. We're doing the same concentration in fats and such with processed foods, fast food, ect. Putting on weight shouldn't be so easy. Eat nothing but fresh whole foods and you'll have a heck of a time adding weight. There's a reason Bears have to gorge themselves before winter.. it's a chore to do it on natural foods.
It's incredibly easy to gain weight when eating easy food and not having to "forage" for the fats and carbs. Add in the fact that it's basically concentrated, and you don't have to eat much of it. Notice the serving sizes on foods. Like a Sobe drink. That's supposed to be healthy. Read that bottle! It's 2 servings, double the nutritional information. Scary! Personal Pizza... read the serving count, it's isn't an individual sized serving at all.
Food makers focus on profits and sales. They don't care about your health, they want you to buy their product. Look at prepackaged foods as a gimmick... find the trick in it. Serving size, for example, is a gimmick. It gives the illusion of health. How many people only eat half of a personal pizza? Drink only half a bottle of soda or juice? Once you eat what they really reccomend for the serving size, you're still hungry.
With whole natural foods... eat as much as you like so long as you haven't salted, buttered, oiled it to death. Gorge yourself on salad, until you're so full you can't move. Not at the China Buffet. Leave the ranch out of it. That irks me to no end... "I'm on a diet, so I'm eating salad" and then it's covered over with enough ranch and bacon bits to cause several clogged arteries.
My mother in law is a prime example of dieting gone bad. She's a member of lord only knows how many weight loss clubs. Even put some Sensa food sprinkle stuff that's supposed to make you full sooner. I watched her at O'Charlies, sprinkle the stuff on her food, then eat the entire plate of buttered/salted Tilapia over rice. She eats those premade frozen processed weight loss foods (many of which contain actual CARDBOARD to reduce calories) and she wonders why she's still hungry.
If you see any word on an ingredient list that you can't identify as actual food, google it. Another food industry gimmick is "natural flavors"... you know petroleum based products are considered natural because they come out of the ground initially.
Food for thought...