I am knitting this pattern and would like the cardigan to be 25 Cm longer than the original design. Since it’s knitted in one piece ,I can’t figure out whether to keep increasing the rows or just stop the increase per design & continue knitting to the desired length. Your help would be very much appreciated. 
Luise
It’s not easy for me to see how to maintain the overall design and lengthen the jacket. Every row that you knit will also increase the widths of the fronts.
If you only work rows across the back section between the increase lines, you’ll change that nice line of increases by leaving them out.
Many thanks for your reply.Regards Luise