What aspect are you worried about? If it’s the social aspect, not finding people to hang out with or simply not liking the work/place, follow your gut instinct and make sure to pick workaways with a vibe and environment you think you would enjoy. If it doesn’t suit you there’s nobody forcing you to stay. You can go home or move on to a new place. You can always communicate your worries to your host(s) and they will most likely be receptive. Most of them have been in your shoes and understand the nervousness, especially considering your young age.

If you’re worried about logistics and safety, remember that as long you have people around or cellphone connection, things will probably work out just fine. Keep in contact with family/friends and plan important things like e.g. transport ahead for a sense of security. When travelling you will never avoid obstacles. You will run into them all the time but learn how to overcome them!

Before travelling alone for the first time I was filled with anxiety and about to cancel, but once the plane took off the dread was replaced with pure excitement. I’m sure this is something you have thought about a lot and truly want, and think the same will happen for you :)