I am having trouble deciding how to go about this. I am in the process of rewriting my novel. Each chapter begins with a telephone conversation between two of my main characters. Then, one of the characters goes on to recall a memory from their earlier life together. In my first draft, I was writing the phone conversations in present tense, to give a sense of immediacy - and the memories were written in past tense. A few weeks ago, I had a brainwave, I felt I should make the phone conversations in past tense and that the memories should be written in present tense, to make them feel like flashbacks. I think this could potenially work, if done well - pulling the reader in, etc. I would like some opinions, please! Could this work? What would you prefer if you were reading this book?