Yep, I did it. Not so scary. It didn’t turn out perfectly, but I’m really happy with my first attempt:

There I am, acting goofy, posing in front of our great, bright bedroom curtains.
I wasn’t sure how much I was supposed to stretch the neck ribbing while I sewed, so it is a little loose in the front, but tighter in the back. Now that I know how this process should feel, it should be easier the next time around.
The t-shirt is a medium, but it’s really roomy. But then, I didn’t pre-wash, so who knows - it might be a perfect fit after a turn in the dryer. That’s why I didn’t try to fit it better.
The only problem? The hem using a traditional sewing machine. I just can’t get it to work right. I get this pull - not a nice, smooth hem. That’s why I left the bottom edge serged. I didn’t want to get all the way to the end and mess the whole shirt up.
The hem of the sleeves is a little odd, but not too bad. The parts I sewed with the overlock machine - that was SO EASY. I can’t believe I was afraid of sewing with knits.
I’d like to research a little more - maybe I need a different needle. Maybe there are certain standard machine settings that work best. I might play around with my remnants to see how it works.
I feel like I’m almost ready to make a nice knit summer dress or something … maybe a couple more basic t-shirts first. I’d really like to try the raglan tee in the Sew U Home Stretch book, or one with a hood. That could be fun.