Mix the filling with your hands until it's slightly tacky. This is to release myosin from the meat, which will keep the filling from falling apart during cooking. However, do not overmix to the point where the mixture is too homogenous, as it can toughen the texture.
Do not overstuff the wrappers to prevent them from bursting during frying. Make sure the filling is not too wet to cause tears on the wrapper.
Don't forget to taste test! Pan-fry a small portion of the meat mixture before wrapping and adjust seasonings as needed.