You can't go wrong with hand-knitted gifts, and this beginner's lace sachet is a great idea for Mother's Day.  Here's my hint for knitting lace.  Count your stitches at the end of every right-side row (with this pattern, that's rows 2, 4, 6, 8, 10  and 12).  I'm speaking from experience here.  It's so easy to leave out that yarn-over or k2tog.  If you count, and you find you've wound up with too few or too many stitches, simply undo and fix it (via craftstylish).