Now that Overwatch Contenders is getting back into full swing, Blizzard has detailed the earnable skins on offer for checking out the tier-two scene for the month of March. Provided you hit the viewership goals set in place, you could be eligible for a Contenders Bastion and Reinhardt skin as part of March's viewership incentives.
To be up for the in-game skins, you will have to ensure the battle.net account you play Overwatch on is logged in on the Contenders website, and assuming everything is in good order, you'll see a little green dot that shows you are eligible for the incentives. From this point, you'll just have to watch the stream for a bunch of hours (if previous months are anything to go by, seven hours for the Bastion skin and fifteen for the Reinhardt one), and then you'll see the cosmetics dropped into your Overwatch account the next time you log in.
You can take a look at the two skins below.