Advice needed.stretch/waviness in my geese edges
I have unpicked the top floral arcs from these flying geese blocks and am replacing the arcs with a different fabric. Because my geese are constructed of triangles I have a lot of bias edges which have been stressed in the process even though I was really gentle with my unpicking. As a result I can see I have some stretch/waviness in my geese edges. Is there anything I can do before sewing the new arcs on to help with this? I think I am going to end up with puckering otherwise.
Any advice would be most gratefully accepted as I have invested a lot of time in these blocks and I am fast losing hope of a successful finish to this project.