The construction pattern of most medieval clothing did not differ between a woman of small means and a woman with a large budget. How the clothes went together was essentially the same. What really set the classes apart, was not the quality of workmanship, but the quality of the fabric from which garments were made. All of the clothing was hand stitched, and there is no reason to believe that a woman living in the country was less capable of wielding a needle and thread than her city counterpart. Both women might use wool to make a kirtle, but the city woman's fabric would be substantially finer and have richer colours than a woman who lived in the country.
Even naturally dyed clothing could be relatively colourful, and while laws prohibited some colours to some classes, a poor woman could avoid looking dowdy by good use of mixing of colours for her wardrobe, limited though it may have been. This page takes a look at sewing and making basic medieval dresses. For more information on patterns from existing clothing, visit the clothing section on the links page.