Katwalker (interesting username choice)
Anywho, that looks like an acceptable cut. It will slow your growth and take about 2 weeks before new growth appears. (Unless buds are already on the other branches). Watch how much you water it (A lot of people new to the forum end up over watering their "bonsai").
Please check out the care instructions here:
www.bonsaiempire.com/tree-species/ficus
Now this plant type is sold as bonsai but it really is a house plant. See the sub article in the above link: Acquisition of ficus ginseng Bonsai
Also here is a video we have been recommending. I hope this gets you interested in bonsai and I hope you can find better material in the future.
