3D Kawaii Seasonal Sticker Sheet

Create a 3D kawaii 2:3 canvas featuring nine chibi-style stickers dressed in seasonal and holiday-themed outfits including {argument name="theme 1" default="Christmas"}, {argument name="theme 2" default="Halloween"}, {argument name="theme 3" default="summer beach"}, {argument name="theme 4" default="winter cozy"}, {argument name="theme 5" default="spring flowers"}, {argument name="theme 6" default="autumn leaves"}, {argument name="theme 7" default="birthday party"}, {argument name="theme 8" default="graduation"}, and {argument name="theme 9" default="New Year celebration"}. Use the attached image for reference. Each sticker has a white border with shadow effects and includes festive speech bubbles featuring phrases like "{argument name="phrase 1" default="Happy Holidays!"}", "{argument name="phrase 2" default="Spooky!"}", "{argument name="phrase 3" default="Beach vibes"}", "{argument name="phrase 4" default="Cozy time"}", "{argument name="phrase 5" default="Celebrate!"}", and "{argument name="phrase 6" default="Yay us!"}". Set on a soft gradient background transitioning from white to pastel rainbow tones for a festive, versatile vibe suitable for year-round WhatsApp sharing.