it may be a dumb question but id rather not make a guess and mess up ;]
Don’t do any decreasing or increasing.
All you have to do is just keep knitting the pattern you have started, don’t change anything. Good luck with your project!

thank you!
[i’m attempting my first mittens. its summer and i’m knitting mittens >.<]
It’s OK to knit mittens in the summer. Hobby Lobby will have its Christmas trees out in a week or two.