I would just say have fun and embrace learning as you go. I have not played this game but hopefully the rules light aspect allows you to not worry about the mechanics of the game and focus on story and fun. I like the cozy animal games like this, and I expect it will be similar in vibe to Humblewood and Mausritter.
The problems you encounter will likely have to do with being a new DM and will happen no matter what system you run. There is a near endless supply of new DM advice on the internet which you could search through. I particularly like Sly Flourish and recommend reading his Top Tips for RPG Game Masters. If you take that advice to heart, it will help you avoid the common DM pitfalls.