If the midtones look fine, then skip this step. For this photo, I think the midtones looks a bit too bright. Select the middle slider for midtones and adjust it to the right side until it looks good to you. Use your own eyes to judge what looks good to you. I can't help you with this
Now adjust the saturation slider to the right. Use your own eyes to judge. Often, adding 30 to 40 to saturation is fine. There is no fixed amount, it will be different for different photos.