Private Sub Form_Load()
    On Error Resume Next
    Picture2.Height = Picture1.Height
    Picture2.Width = Picture1.Width
    
    'Cargamos 100 Timer's y los activamos
    For i = 0 To 100     'Bajar el valor para hacerlo mas lento
        Load Timer1(i)
        Timer1(i).Enabled = True
    Next i
End Sub

Private Sub Picture2_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
 'Pintamos por donde movemos el mouse
 On Error Resume Next
 Randomize
 Picture2.ForeColor = Picture1.Point(X, Y)
 Picture2.PSet (X, Y)
 Picture2.DrawWidth = 5
End Sub

Private Sub Picture2_Click()
    'Borramos si hacemos click
    Picture2.Cls
End Sub

Private Sub Timer1_Timer(Index As Integer)
    'Pintamos puntitos aleatórios
    On Error Resume Next
    Randomize
    a = Int((Rnd * Picture1.Width) + 1)
    b = Int((Rnd * Picture1.Height) + 1)
    Picture2.ForeColor = Picture1.Point(a, b)
    Picture2.PSet (a, b)
    Picture2.DrawWidth = Int((Rnd * 5))
End Sub