I am going to put a little different twist from you other responders. First I do believe that we can be too hard on ourselves. But I have done bargello and I didn't like it when it didn't line up as that is what makes that pattern unique. In this case it was a jacket I made and I know myself to know that if it didn't line up, I would never wear it or if I did I would be apologizing about my errors. If you aren't giving it away and you can live with it, then go for it. I personally feel you will be happier if it lines up. Just my opinion.