Need help finishing a sweater

I made a toddler sweater with a sailboat motif on the front. The inside has lots of loose threads of course. What is the best way to finish this? Should I try to weave all these threads in? Or should I trim them and then cover the whole area with fabric somehow?

Usually you would weave in all the ends. If you cut them short they may pull out.

Unless you are planning to start a blog thread this thread would be better in the How-to Forum. If putting it here was an accident let me know and I’ll move it. The Blog Forum is very quiet and you won’t get many answers here.