You could make your small LED panel light a soft light by using it with a softbox umbrella or even an umbrella reflector. However, there is a much easier and cheaper method you can use. If your desk is against a white office wall the secret is to set your LED light to its maximum brightness and turn it towards the wall. By bouncing the light off the wall, you will have created a large area of wall that will reflect the light back towards you. Each point on the wall will effectively become a light source, so you’ll be illuminated by light from many directions. The wall effectively becomes a soft light-source that will help smooth any shadows on your face, hiding any unflattering wrinkles in the process.   If your wall isn’t white, you can still use this trick by tacking a few large sheets of white paper to the wall or using a couple of sheets of white foam board.