Stitching was undone at the bottom hem as well as the inseam and outseam, shirting material fitted in, and everything was stitched back up.
Because of this there is no horizontal seam visible to the outside of the pants, although you can easily catch your toes in the side when putting them on. Not a big deal for making them look better. I emphasize this part because in the 3rd photo you can see horizontal stitching at the top, but that is to close up just the shirting material that is folded over itself on the inside, not the shirting stitched to the pants. Hence the inclusion of the 4th photo to emphasize where the shirt is actually stitched to the pants.
By no means a perfect job and not close to the level of polish of something like the Junya ones from SS11, but it was the first time and for $30 of alterations on a pair of $20 chinos, I can't really complain. I also really didn't like the material on the lining of the Junya ones and I wanted the classic J. Press material for that super-subtle "fuck you americana" steez. It's the little things