Watercolor Travel Landmark Triptych

Create a whimsical hand-drawn watercolor travel poster triptych on a white paper background, divided into exactly 3 equal vertical panels by thin black lines, with a dark charcoal footer strip across the bottom. Each panel shows a miniature floating island cityscape with tiny landmarks, soft shadows, dotted airplane flight paths, small doodle clouds and birds, and a blue watercolor patch of water with a small boat. Use delicate ink outlines, pastel colors, architectural detail, and a clean sketchbook style. Panel 1: {argument name="first destination label" default="London"} with a tiny red heart after the label. Include exactly 6 main visible London elements: a red telephone booth, the London Eye, Big Ben and Parliament, Tower Bridge towers, a red double-decker bus, and a small white river boat on blue water below. Panel 2: {argument name="second destination label" default="China"} with a tiny red heart after the label. Include exactly 7 main visible China elements: a traditional pagoda, a pink cherry blossom tree, a small panda, a green Great Wall section on hills, a red-and-gold Chinese palace gate, the Oriental Pearl Tower, and a Shanghai-style skyscraper, plus a small wooden boat on the water below. Panel 3: {argument name="third destination label" default="United States"} with a tiny red heart after the label. Include exactly 9 main visible United States elements: a leafy tree, a vintage street lamp with an “NY” sign, the Golden Gate Bridge, a yellow taxi, the Statue of Liberty, a grey skyscraper cluster, the Chrysler Building, a waving American flag, and a retro diner sign reading “DINER”, plus a small white sailboat on blue water below. Add exactly 3 dotted airplane paths total, one above each panel, each ending in a tiny airplane flying up to the right. Add small simple clouds and bird silhouettes in the empty sky areas. Destination names should be centered under each miniature scene in a neat handwritten font. The bottom footer strip should contain italic light-gray text reading: “Source: Naiknelofar788 on X”. Keep the overall composition horizontal, charming, airy, and highly detailed, with no extra countries, no extra panels, and no photorealism.