I finished my vest! ...and I am sooo proud I did it.
I am a bit sad it turned out so short - while knitting I thougt it was ok that length
Anyway, it was my first try, and my second vest will be better.
It is plain grey yarn - done with 4mm needles - and the pattern is from up to down only knit. There are stripes in it that are caused by the 8mm needles I used for 3 succeeding rows now and then to create a spripe. It is actually like mini-enlongated stitch.
The last third of the vest is a lace pattern: every second row *knit stitch, knit stich, yarn over, slip stitch knitwise, psso (decrease)* .
I started this pattern not always each row at the same point, so the holes would not build vertical rows. So when starting the row, 1st row knit like above, 2ned row start the pattern knitting 3 stitches or 4 to place the hole not exactly above the last one.