One of the things I did last weekend while desporting myself with 88 women at the Seven Hills Inn and Resort in Lenox, Mass was attend a workshop in lace knitting taught by Pam Allen.
It was pretty basic, because a goodly number of the 70 attendees were lace newbies - but still with enough meat to engage the minds of more experienced lace knitters. And while I was aware that placement and type of decreases has an effect on the lace - the sampler she had us knit helped display that - and show the effects.
Basically the sample is an attached series of squares, each with a 'V' of eyelets, except the last which was an inverted 'V'.
Square 1: k2tog before the first eyelet of each pair and skp after the second of each pair
Square 2: skp before and k2tog after
The above pair of squares showwed the hard line of decreases you get with one selection, and the much softer line you get with the other.
Square 3: as 1 only moving the decreases 1 stitch away from the eyelets.
Square 4: as 2, modified as with 3.
the second pair showed much more subtle lines of decreases.
Square 5: decreases moved to outer edge of square.
Square 6: in pam's example was inverted with double decreases up the center line. I changed it to orient the same way as the other 5 - but kept the double decrease up the center line.
Square 7: inverted v as pam's original square 6
and will add 8 - 12 as inverted examples of the other 5 squares.
Then I'll do the series over again with decreases on the inside angle of the 'V" .
It's an interesting study.
I'm hoping someday to find a class in **using** these techniques in design.