Add some output to avoid confusion

taas_client/cli.py

 from logging import error
+import time
 import sys
 from click.termui import style
 import typer
@@ -23,6 +24,9 @@ def upload_file(
     ),
     url: str = typer.Argument("http://localhost:5000/testbook", envvar="TAAS_URL"),
 ):
+    modified = time.time() - notebook.stat().st_mtime
+    console.print(f"Last change: [bold]{round(modified)}s[/bold] ago")
+
     files = {"file": open(notebook, "rb")}
     try:
         with console.status("[bold green]Testing..."):
@@ -60,10 +64,13 @@ def upload_file(
         try:
             print(f"[red]Error: {exc.response.json().get('error')}[/]", file=sys.stderr)
             print(f"[red]Message: {exc.response.json().get('msg')}[/]", file=sys.stderr)
+            print(":boom: [bold]Submission failed![/]")
         except:
             pass
         typer.Exit(code=1)
 
+    print(":mailbox: :heavy_check_mark: [bold]Submission successful![/]")
+
 
 def run():
     typer.run(upload_file)