Hooray! Your finished block came out great. Does the pattern give dimensions for the unfinished block sizes? And did your block measure up? My only concern about having to trim down units is that you may have a block that measured smaller than the pattern and when you go to put all those blocks together you may run into issues. I strongly suspect that if the pattern in the magazine asked you to enlarge the pattern piece on a copier, that is what caused your PP unit to come out slightly larger than it should have.