Failed to try transparent cloth.
Not an easy one^^. Only tried it once myself but wasn't that hapy either xD
But learned some things too^^
To create a transparent cloth effect you have to use skintone on the spots where the silk is touching the skin. But only where it touches! When the silk is wrapped or folds or isn't falling on the skin use your silk colour.
In your case the effect doesn't work too well because you just used a light red. Here's a quick sketch:
View attachment 72024
I added skintone on the spots where the fabric is touching her skin directly. On her right hip im not sure if the fabric is really touching her hip. It's doesn't seem like it. It's important to trace the bodyparts underneath the silk. The right arm is a bit tricky. The silk is wrapped tightly around the arm and the skin should be visably from all sides. But painting the whole thing in skincolour might look odd. Probably best solution is to choose two sides to paint the effect and blend into red outwards.
Transitions should be quite smooth. I would paint on the skincolor on the correct spots and then blend them in with red glazes.
Iportant, concentrate the skincolour on upward facing surfaces and blend into the silk colour/shadows on downward facing surfaces. Like on her breasts for example. Even though it looks like the silk is tightly wrapped around them, it looks odd when you paint it completly with skincolour. Blend the lower part into red/shadow.
Adding some detail might help to sell the effect. I added a small navel on her stomach. The silk won't touch anything there and should be darker/red. You could also add nipples on the breasts.
But most important: Always keep on experimenting
