Here's my finished piece after many hours of tedious but enjoyable work. I've learned a couple of lessons, which are:
This is very tedious work that requires intense concentration as every stroke must be as perfect as I can make it - so, don't work too long at a time, or at all if I feel tired or just "off."
Consider leaving some of the flowers and/or leaves less finished than others.
Be really careful about keeping the paper clean. Keep a paper towel between the paper and my restin hand, and keep the paint palette on the same side of the piece as the water container to avoid unintended drips.
Remember that line work will blur when a wash goes over it, so plan the sequence of line work carefully.