alright, ive beaten jack of blades and it rather simple, i did it twice, once i killed my sis, the other time i didnt, the outcome was the same except for the picture of me was different...anyways, is there any way i can go back and wonder around and do other quests, cause after i beat jack, and all that stuff it went back to the start screen and i selected my game and i was still it the guild when it was on fire. can i not do anything after this point? or is there something im not doing or doing correctly that allows me to do other stuff after i beat jack?!?! please help!!!!

You must watch the 20 minutes of credits at the end... After they are through it should give you money, experience and Jack of Blades Mask, then you are free to do whatever.

yes and there are no more quests accept stuff like the temple of avo and skorm, or the sword and the stone.

Whats really stupid is when I beat the game, you hear the Guildmaster says that you have a new questcard, but you cant acess the world map, where you take quests from.