To make a good comic storyline, you need a compelling beginning to hook readers. Introduce complex characters who grow and change. Have a clear resolution that leaves a lasting impression.
First, think of a theme that resonates with your audience. Then, create a conflict that drives the story forward. Develop subplots to add depth. Make sure the pacing is right - not too slow or too fast.
Well, start with a unique and engaging concept. Add interesting characters with clear motivations. Build a plot that has tension and surprises.