I looooove female escape artists. I did a set of drawings titled "Challenge Escape Artist" in which the girl is tied to a post by a man from the audience, then dropped upside into a tank of water, but the safety rope breaks! I ran this by DA but they thought it was too naughty for this site as it showed penetration. Drat. I loved that series.
I like her expression, its a look of pure concentraition atleast is how I see it. Atfirst I was kind of bummed taht she wasnt gagged, but concidering the situation I dont thing it would have been needed. You did really well on this, you'r attention to detail in everything from the ropes to the water is amasing ^.^
Maybe she is training for a great challenge. A competition where the girls need be very well tied. If the ropes are not so tight, the girl can lose some points. So, the challengers have aesthetic concerns about the ropes, the tight and the hot appearance of swimsuits.
Maybe she can improve your abilities and so improve the ropes to be much more tight and much more restrictive too. In the most high level of difficult she can improve the amount of rope too, and add another restrain devices, like a big ballgag.