I have a few pairs of jeans that I need to get shortened. Is this a pretty standard (simple) procedure that all tailors can do, or is it important to find a good tailor to do this? Also, are there different methods for doing this? I just wanna make sure that after it's been shortened, the bottom part still looks the same as the original... do they usually re-attach the very bottom part, or do they just try to hem it to look like the original? Thanks for any info.