Generally, there is no taboo, but it is best not to draw black and white portraits of older women and not just portraits (above the second button from the collar)
It is best to have colored busts ( A bust is a portrait including hands)
The painting should be kind and beautiful~ :) The kind that can show the infinite love for your mother in your heart~
That’s right If you try to lighten the obvious wrinkles on your face as you get older~ She will definitely like it
Hehe, I hope this can help you
You can also find a professional painter to paint to show your filial piety< /p>