I'm about to go play so will give it a shot for you Pam.
EDIT: Total fail here. I simply cannot get a screen shot. I tried prntscrn but when I try to paste it into paint it's all black and I don't know any other way to do it. Oh, I did try ctrl C but that didn't work either.
So, for your Peteran monastery. You need to have some simoles but here's what you can do. Go into the structural tab in build/buy, (furnish) mode. Remove all the lower level stone work except maybe the alcoves right at the front. Replace the stone with oak panels. Go into the walls section and replace the shabby looking upper stuff either with plain stucco or one of the mural types. You can color the plain stucco or use one of the fabric or rug patterns. I used an all over green/gold fabric pattern. Go into the decorative section and choose the red wool rug. This is a long rug. You can move the pews to the side straight on and place the long rug down the center forming an aisle. I recolored all the wood a much lighter "blonde" color. You can recolor the rug. I colored the outer edges with the same green pattern I used on the wall and colored the middle section a plain, dark green. Of course you can use any color you want. I made the foyer walls plain stucco. I made both the foyer and church floors a patterned stone. (bought in the floor section) and made one part of the stone white and left the other dark grey. I moved that table that's in the foyer into the church at the head, (near the door), of the rug but not on the rug. In it's place I had gone into where you can get statues and chose one of the gilded things, there are two to choose from. I put two pots of sage on either side of this and the watcher's work bowl in the center of the floor like a baptismal or holy water font. I also put two pots of sage on either side of the podium. The only things I did with the bedroom, beside moving furniture around and adding a larder, was I added a wash bowl and made the walls plain stucco.
Had I wanted the church part to look more Catholic or Episcopal I would have added different stone statues or maybe more of those gilded things. I never thought about banks of candles till just this second but that would also have worked. I wanted to keep the church more generic and not lean toward any particular faith we may be aware of so tried to keep it simple and welcoming.
There is so much stuff in the furnish thing you can really do a great job remodeling anything, especially with the structural pieces. Of course, you look less medieval then but there really is a huge amount of things to try. I started out by "papering" walls with the rugs and fabrics and THEN discovered all these goodies doing the church! Now I want to go back and redesign everything.