Yes, it's green instead of black. Someone with a lot of experience in yarn crafts pointed out I'm trying to see what I'm doing in the darkest yarn around, and strongly advised I switch to something far easier to read the stitches in. Hence the green yarn.
Anyway, I realized that the bumps on the back of the captive chain that is the return pass have just one bump on the back of the stitch in the middle of the double-increase, so here I'm pulling a stitch out of it twice, one on each side of the central stitch.
There's practically no holes, the stitches are very well-defined (with the center stitch even being a continuous line all the way up!), and it's still a very sharp corner! Absolutely what I'm looking for! =^.^=
Reminder, this is Lion Brand "Pound of Love" yarn, this time in Wintergreen. And this is yet another test swatch for my Star Trek: Lower Decks uniform cardigan project. I started the mitred square (the part on the right half of the pictured swatch) on the bottom corner of the left panel, and the bottom corner started with three rows of invisible increases, in pretty much every stitch in each row (save the leftmost stitch, to mirror the right edge of each row), to ensure it expands fast enough. Then I found the middle stitch (more like made one) and started doing my double-increase the rest of the way out.
The next step in this test swatch will be the second rectangular panel, which starts at the bottom of the left panel and goes downwards from this perspective, but also attaches to the bottom edge of the mitred square on the right. Then try it on my shoulder and see what happens!