Create a vibrant digital painting style poster for a joyful firearms and munitio

Create a vibrant digital painting style poster for a joyful firearms and munitions expo. The poster should radiate excitement and celebration, featuring an array of modern and futuristic weapons displayed with flair. Include smiling characters from diverse backgrounds, all dressed in thematic attire, showcasing the weapons in a fun and engaging manner. The background is festooned with colorful banners and balloons, under a banner that reads 'Welcome to the Annual Joyful Arms Expo!' Use bright, cheerful colors to contrast the mechanical details of the firearms, emphasizing a friendly and welcoming atmosphere, <lora:poster2-000040:0.6>