Are you dancing with the same partner all of the time? That could be part of the problem. When I find myself in the wrong spot, it is usually because I am being led (pulled) to the wrong spot by an erring partner. This is a difficult problem to fix!
Most good Lindy dancers (as followers) do not find it necessary to stay square with their lead the whole time. Some dancers face away from their partner as they come out of the closed hold, and resolve their position on the 7&8.
It is necessary, however, to stay square for the rest of the step. Another way to help with this is to concentrate on your arm placement: If your left arm is folded so that your forearm is very close to you, you won't be square. So, pay attention to how you are placing your arms, and for the most part, if your arms are correct, so is the rest of you!
Concerning the swivels on counts 1,2: Practice practice practice! That's the only way I know of to make them better. You can also get a lot out of watching more experienced dancers, and trying to imitate their footwork.
Good luck!
Lola