How to sew a patchwork quilt if the lining is larger than the quilt top?

If it is a quilted quilt, the base fabric must be larger than the top fabric before quilting and crimping.
After quilting is completed, the fabric surface should be as flat as possible, and then the corners should be cut to make it smooth.
If it is made into an ordinary quilt cover style, because it is sewn on the reverse side and then turned from the opening to the front (similar to making a small pocket, otherwise it will be difficult to hide the sewing stitches), it can be easier to align the lining and surface fabrics directly. Begin to sew on the small side. After sewing, the extra part will affect the quilt installation, so you can trim it as appropriate. If it is just a little larger (5cm), you can directly sew it along the edges and install the thickest quilt used in winter. The thick quilt itself has a certain thickness enough to support the extra bit.