So sorry about your failed attempts on making a female trousers, but then it's a gradual process, now that you've made a mistake and had someone to help you out, such mistake will be avoided.
I'm more knowledgeable about men trousers, which is somewhat different from that of the women in hip, waist and shape generally, so I don't think my input will help.
Thanks you so much for the encouragement
Also no knowledge is a waste 😃