1. I almost never measure my hems.
The horror! I read about how people use chalked string to mark their hems or use other techniques. Yeah, I don't do that. Since I make a muslin for everything, I figure out the hem I want at that point and then go from there. When I'm at .e iron pressing up the hem, I just eyeball it and check the depth only a few times.
2. I am inconsistent with snipping threads.
I try to snip them at the end of each seam, but that doesn't always happen. If it can't be seen from the outside, I don't worry about it.
3. I don't always remove ease/basting stitches.
See #2. =) The only exception is when I insert an invisible zipper. Most times I use contrasting thread so that I can visibly see the guideline. I usually remove this after the zipper is in - if it can't be seen from the outside.
4. I regularly practice the LSO (Lop Shit Off) method.
If something is too long or not working out in one spot, I just lop it off and fuhgeddaboutit.
5. I totally eyeball the stitching line when I coverstitch a hem.
Oddly enough, this works for me. I tried using Post-It notes as a guideline, but for some reason the hem always came out uneven. I've had far more success "feeling for the hem" on top and slowly guiding this area under the foot.
Come on, fess up! I can't be the only sinful sewer.