I have two pair of RTW side zip pants that I have altered for myself and am happy with the fit. They are in a stretch denim and a black stretch poplin. The black ones are beginning to look really bad. I am considering taking them apart and making a pattern from them. I have a really hard time finding pants and jeans to fit.
1. Do I need to do anything special other than just picking them apart and pressing to use them as a pattern?
2. Would it be be a good idea to change the tapered leg to a wider straight leg or even a modest flare?
3. Could I use these pants to compare to other patterns to see how the pattern would fit?
4. Would it be very difficult to change the side zip to a front fly for more design options?
Thanks for any advice you could give me.