So I have a question that I could do with some opinions on. I decided to add a flash back to one of my character's early years in order to give some information to the reader about a race of people in my story. I had intended it to be just a couple of paragraphs but as i progressed into the flash back I just couldnt get the information across in the space alloted. It actually ran right up to a full chapter (about 20 pages). Now this in itself is not so much the problem, where I need advice is... would I be better off breaking the flash back into peices or to just leave it as is? I have discussed this with 2 of my friends and they dont agree. One friend thinks that its too big and it takes away from the main plot and the other friend thinks that to break it up will mess with the flow....
I know that without the story being made availible it could be tricky to give advice, but any kind of advice would help.