Charity is not an excuse to give away unsuitable quilts. That being said, give the best you can in materials and workmanship and design. Give what you would like to receive. When looking at what others are giving, accept that they have given the best they can and bless them for their efforts. If the gift is going to reflect as a gift from the group, rather than an individual, set some standards. Identify materials to be used (all cotton), size, and choose simple designs so that all can participate. Maybe have a charity work day where those who have less experience can do some easier parts of the project and learn from those who have more experience.