Okay Dimes, Mammasith has just asked me to chime in on this one given my knowledge and experience of the old republic traditional style Jedi. Generic Old Republic is what they used to call it in the Costume Standards before they combined the Old and New into 1.
Now I hope you don't mind, I just grabbed your pics and did a little editing to help figure this out. It was a little difficult to tell from the pics.
Firstly your avatar, just to list the 3 parts, as you we all know.
That out of the way, I'm guessing you are talking about the "Outter Tunic"
Next photo, an edit highliting the outter tunic of your second pic.
In relation to the above pic. Are you talking about how the little corner (A) shows through or are you talking about how far down the entire Tunic (B) comes? Because either way, both are fine, they could very easly be fitting issues.
In the next pic....
... is it the distance between the Hems (The bottom of the tunic) point C and D? Because again like the first pic it's all a fitting issue.
I have known a number of Jedi, and a few personally, to have fitting issues with their first tunics. It does require some tucking and pulling in the right places to get it to sit right, often helps to have a second pair of hands. Even I had problems getting into my Old Jedi and still do.
However, without going back through this thread I do see that this tunic looks like it would fit someone a bit bigger than yourself.... perhaps my size infact or even bigger. That would require some alterations. But I wouldn't do anything if I was you until you can get someone to take a look at it.
In order for me to come up from Ipswich and take a look, I would have to convince the girlfriend to let me take to the trip, as it would be full day for me. But I'll see what I can do. However if you can get Mammasith to take a look she should be able to help.