Mood: The mood of the video appears to be lighthearted and playful, with a theme of creativity and fun. The use of bright colors and casual clothing suggests a relaxed and informal tone. The title 'Expensive Poster Making' implies that the video may be a humorous take on the process of creating posters, possibly with a focus on the challenges or absurdities of the process.

Environment: The environment appears to be a domestic setting, possibly a bedroom or living room, with a white background and faint outlines of furniture and decorations. The presence of a scale and a picture frame suggests a cozy and intimate space. The overall aesthetic is clean and minimalist, which contrasts with the bold and playful text and colors used in the title and logos.