Look over the vine before you begin, to identify dead, diseased, or damaged tissue that needs to be removed. Damaged or diseased vine tissue may be discolored, swollen, or markedly different in appearance from healthy tissue. Dead tissue will feel brittle.
Cut off all dead and damaged tissue, and discard it in your trash. Don't compost it, because it could spread disease to other plants.
Thin out the shoots so there is space between them. Make sure no spurs touch, or the vine will grow tangled.
Cut back old growth severely on your muscadine grapevine, leaving only two or three buds on each shoot.