Two-Sided Watercolor Event Flyer Mockup

Prompt

{   "type": "two-sided event flyer mockup",   "style": "watercolor illustration, warm earthy tones, cozy, inviting, rustic",   "left_side_front": {     "header": {       "title": "{argument name=\"event name\" default=\"SENDAI COFFEE PICNIC 2026\"}",       "subtitle": "{argument name=\"subtitle\" default=\"街のカフェが集まる、春の1日\"}",       "tagline": "A relaxing time with your favorite cup"     },     "main_illustration": "People enjoying a picnic on a grassy field. A family sitting on a checkered blanket drinking coffee. Background features wooden coffee stalls, tents, trees, and a distant city skyline.",     "event_info": {       "date": "{argument name=\"event date\" default=\"2026年5月16日(土) - 17日(日)\"}",       "time": "10:00 - 17:00",       "location": "{argument name=\"location\" default=\"七北田公園 芝生広場\"}",       "badge": "Orange oval badge with text for free entry"     },     "footer": {       "sponsor_logos": 4,       "elements": ["QR code", "grass and white flowers border"]     }   },   "right_side_back": {     "header": {       "title": "{argument name=\"event name\" default=\"SENDAI COFFEE PICNIC 2026\"}",       "illustration": "small green tree"     },     "sections": [       {         "title": "Vendor List",         "layout": "2 columns",         "count": 9,         "labels": ["Blue Ridge Roastery", "NORTH BEANS LAB", "SUNNY DAY COFFEE", "KITSUNE COFFEE WORKS", "Forest Table Cafe", "creme & crumb", "GOOD DAY SAND", "HOSHINO KITCHEN CAR", "PIZZA VAN 88"],         "illustrations": ["sandwiches", "pizza", "coffee cups"]       },       {         "title": "Event Timetable",         "layout": "2 columns",         "count": 7,         "description": "Schedule with times like 10:30, 11:30, 13:00, 14:30, 16:00 and event names"       },       {         "title": "Feature Highlights",         "layout": "3 horizontal boxes",         "count": 3,         "labels": ["Latte Art Experience", "Coffee Tasting Stamp Rally", "Food & Sweets Area"],         "illustrations": ["single coffee cup", "multiple coffee cups", "food basket"]       }     ],     "footer": {       "social_media": "{argument name=\"social handle\" default=\"@sendai_coffee_picnic\"}",       "icons": ["Instagram logo"],       "elements": ["QR code", "brown background strip"]     }   } }