The first thing you need to do is to unlock and locate the island with the druid on. He will always spawn in front of a huge tree, and this is where a lot of people miss out. You can actually enter the tree by clicking E while holding your mouse over the door!
The island is just north-west of your starting island, so it should be one of the first you unlock when you play the game.
|Where to change your skin and outfit in Forager. Enter this tree house.|
Once you are inside, click on the wardrobe right in front of you, as seen on the screenshot below. This opens up a new menu where you can select any of your unlocked skins, outfits, hats, backpacks and more. This allows you to customize your character, and hopefully motivate you to keep working towards completing new challenges to get more options.
|Interact with this wardrobe to change your skin and outfit in Forager.|
I hope this short guide made it clear how you change your appearance in Forager, and please let us know in the comment section if you got any further questions.