Blåhaj

Hej all! I've gotten into knitting lately but don't always have ideas for what to make. My partner suggested making a little sweater or something like that for our haj son and I love it! Has anyone done something like this? I'm a total beginner so don't know anything about making my own patterns (or reading them tbh - but for Blahaj, I'll learn). Would love to see any patterns or suggestions 💙