Some of the finished results depends on how straight the seams were sewn. Bit most results for SID depend on the LA'ers skill level and the machine. When I had my Tin Lizzie I was rarely satisfied with the results and thought it was my lack of skill. When I got my Nolting I found that SID was not all that hard and with the use of a ruler, looks great. But straight and even seams are a bigggggg help.