Build around server moments
Think about what people say every day in the server: welcome, good job, wait what, no, yes, lurking, taking notes, announcement, mic drop, and high five.
Make jokes readable at small size
Discord conversations move quickly. Use bold expressions, minimal text, and simple silhouettes so stickers are recognizable beside messages and emoji reactions.
Create a consistent mascot or character
A recurring character can make a server sticker pack feel more ownable. Keep the outline, color style, and caption treatment consistent.