This is a simple but effective tie, she looks very elegant, and very sexy.
The result: A very beautiful damsel in distress.
This picture tell a great story. Well done, and also complements to Janine, she can be very proud for this result. She is a natural talent for this.
You should continue this style. The baby steps work perfect.
To see her tied up completely naked makes her even more helpless. A real Damsel in Distress.
If you want to take her to the next step, you should take the same picture and add only 1 chain around her waist and chain that to the grid. It's a small detail that makes her look even more helpless. But not pushing her limits as a model in restraints...like you said: baby steps.