Update app.py

app.py

@@ -95,7 +95,7 @@ def generate_video(positive_prompt, negative_prompt, guidance_scale, bias, step,
 
     
 with gr.Blocks(title="Value Sign Flip Wan 2.1 Demo") as demo:
-    gr.Markdown("# Value Sign Flip Wan 2.1 Demo \n\n This demo is based on Wan 2.1 T2V model and uses Value Sign Flip technique to generate videos with different guidance scales and biases. More on [GitHub](https://github.com/weathon/VSF/blob/main/wan.md)")
+    gr.Markdown("# Value Sign Flip Wan 2.1 Demo \n\n This demo is based on Wan 2.1 T2V model and uses Value Sign Flip technique to generate videos with different guidance scales and biases. More on [GitHub](https://github.com/weathon/VSF/blob/main/wan.md)\n\nPositive prompt should be at least 2 sentence long or the results will be weird.")
 
     with gr.Row():
         pos = gr.Textbox(label="Positive Prompt", value="A chef cat and a chef dog with chef suit baking a cake together in a kitchen. The cat is carefully measuring flour, while the dog is stirring the batter with a wooden spoon.")