[Nfb-krafters-korner] adding yarn or changing colours looming?

[Maria and Joe Chapman via Nfb-krafters-korner]

Hi listers.

For all you looters out there, what is the most professional looking way to change colour or add more yarn to a project?  I know I could simply cut the yarn and tie a knot, but I would think this could show in a  project?

ideas?

thanks.
Blessings!
maria and Joe chapman
bubbygirl1972 at gmail.com