From what I can see at this small size, your examples are professionally done images.
Before you delve into effects added in post processing, have you considered that to truly reproduce these "looks", you have to reproduce the excellent, highly stylized lighting used in taking the photos? This is a very important part of these images and is particularly visible in the 1st set. Also, things like props, a suitable set, model, posing are all other key factors that contribute in fundamental ways to these images.
Throwing some post-processing effect at an image is always very tempting because it takes so little effort (compared to the previously mentioned aspects of image preparation), but after you have seen tens of thousands of low quality images that people, in an endless stream, have attempted to "dress up" or even "fix" by PP efx, you realize that PP efx are ultimately not what makes or breaks an image in the eye of any but the most unsophisticated viewers.
That being said, later, when I have more time, I'll try to hunt down some tutorials for you to produce these two PP effects. There's a lot of relevant tutorials out there, but they are not easy to find among the thousands of unrelated tutorials also on color efx.
Tom