Details in the highlights are crushed, light colours (eg. in skin tone highlights) are shifted to white. This gives highlights a cleaner look. In Lightroom, I've made these changes by increasing the luminance of the yellows, oranges, and reds.
Overall desaturation. In Lightroom, I've reduced the saturation and vibrance slightly.
Mid tone pinks and reds are shifted towards orange and tangerine. In Lightroom, I've gone in the Hue slider and shifted the reds to orange red.
High midtone contrast. Depending on the image and how much contrast and texture I need, I create mid tone contrast in the RGB curve. Increased clarity and moving the contrast slider to the right also adds to this.
In images with a lot of browns/ wood tones, mid tone yellow shifts to a darker richer reddish orange (wooden tones tend to be deeper and redder after the preset). For this effect I've made a few changes in Lightroom to the Hue, Saturation, and Luminance, shown at the bottom of this post. I've also gone into the individual RGB channels and created an asymmetric S curve where the shadows are affected more than the highlights- I dragged the blues down slightly in the shadows, the greens down further, and the reds even further.
I've given you a walkthrough of the editing required for the A6 preset, but you can also purchase my Lightroom preset which will import straight into your Lightroom. I've also blogged about VSCO Subtle Fade M5, Street Etiquette SE3, Mellow Fade F2. A6 and all of the above are available at my Etsy store.