Update app.py

app.py

@@ -50,7 +50,7 @@ def infer(
     steps: int,
     guidance_scale: float,
 ) -> dict:
-    """Generates an image from a scribble using FLUX.2 Klein 9B."""
+    """Generates an image from a scribble (with assets composited) using FLUX.2 Klein 9B."""
     gc.collect()
     torch.cuda.empty_cache()
 
@@ -58,7 +58,7 @@ def infer(
         raise gr.Error("Please enter a prompt.")
     
     if not image_b64:
-        raise gr.Error("Please draw a sketch first.")
+        raise gr.Error("Please draw a sketch or add an asset first.")
 
     try:
         header, data = image_b64.split(",", 1)