Hi, I think my reply to you got sent to the next thread, so here goes again.
Your layout looks great but you have a BIG problem that you should correct immediately. Your leadin rails to the turntable must be aligned with the turntable. The rail that is to closest to being correct is the second from the right, which looks like it is just a siding. To line up the rails, get a 12 or 16 inch ruler, place it within the rails of the turntable, with 1/2 an inch jutting out. Turn the turntable to the spot where you want your leadin rail to enter (or the index if that is what you are using), and place a piece of straight track under the ruler with the rails lined up with the turntable rails. Use the ruler as a guide, moving it out as far as needed to verify that they are in line. Replace the straight track with a piece of flex track, and lay it out to your existing trackage, bending it as necessary. This will tell you where the switches will be.
In addition, I have a few suggestions. Your little set of spurs on the right side would look better if instead you replaced them with one or two or three leadin turntable tracks coming off your diagonal. You have what seems to be the leadin coming off the diagonal now, but it is in the wrong place. Draw a line from the middle of the turntable parallel to the edge of your platform meeting up to the diagonal. This should be your main lead track. You can have another parallel track to this lead going in the clockwise direction, and a third parallel track in the counterclockwise direction. These additional leads should curve just before they get to the turntable with enough space to be straight when they get to the turntable. One or both of these leads could be used to wash, water, sand and feed your locos.