My most dear, most kind, most precious one,
It is very good if you keep a lot of the eight auspicious signs. Keep different kinds—cloth, thangkas or wooden ones—all together or separate. Also there are many [images] of the four harmonious brothers, so you can try to get different kinds and have them around.
Yes, it is karma, that is the basic thing. The eight auspicious signs and the four harmonious brothers are for protection from harm and for success.
Do your practice well. Abandon negative karma as much as possible and practice good karma. Especially transform your mind from ego, from self-cherishing, to cherishing others and if possible into bodhicitta.
With much love and prayers ...