 | Grab the top ring of splines on the leg and extrude them upwards several times, rotating them until they reach 90 degrees and are even with the center divider. |
 | Take the ring of splines along the center and scale them in X to 0 so that they're completely straight, place them perfectly on the divider. |
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Select a spline next to one of the center CPs, it should be a spline which leads into the leg and not the spline ring you just shrank. (see pic, yellow bias handle is pointing inwards) With it selected, press the / key to select the rest of the leg. Right-Click and perform a Copy-Flip-Attach. |
 | You should end up with this. If they're not perfectly joined start connecting splines and CPs until they are. |
 | Select the top few CPs and delete them. Delete any hanging splines that may appear after the deletion until you're left with a nice clean hole. |
 | Select the CPs that make up the hole, it might help if you hide everything else for the next part. |
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From the top view Create a new ring of splines with the same amount of CPs and place it around your older ring. |
 | Connect the 2 rings to each other with small splines and move them next to each other. |
 | If you havent already, move that new spline ring up above the older one. The model should look something like this now. |
 | Extrude 1 or 2 more times if you want/need to, start grabbing points and pushing them into the shape desired. |
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The crotch area looks hideous at the moment, grab the CPs as shown in the image to the left. Note: at the very center where the CPs are packed tightest I'm actually only grabbing every other CP, you need to leave at least a few there. |
 | After you delete there will be a bunch of hanging useless splines, delete them all. |
 | Start filling in the gaps with 5 pt. patches and hooks. I circled some problem areas where 5 splines are connected to 1 cp. This usually results in nasty creases. |
 | Here's a closeup on the problem area, delete the center CP. |
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I rebuilt the spline cross going left to right and up/down, the 5th spline now intersects another section of the spline and ends with a hook.
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