I find it interesting that sacred and scared or so close together in the English language. Just with a skip of the "c" and you go from faith to fear... from trust to doubt. Isn't that just he trick in most situations in life? You can really only come from one space or from the other. If your intention is to create a sacred space then there is no room for fear in that. Perhaps it shows up in your process but it has to be placed elsewhere as it certainly does not belong on the altar. When I go to sacred I think of power and connecting to the light... I think of expansion and open windows. I see fear as a gateway to sacred. Either you can let fear lead you or you can use it as an invitation to kneel and sit beside yourself. Next to your fear.. next to your power.. letting all parts exist.