Awesome patterns :) Easy to do
Japanese Craft Book "Illustrations with Ballpoint Pen"
Kawaii 4 colored ball point pen illustration by JapanLovelyCrafts
3-8. 植物や風景を描こう | ４色ボールペンで！かわいいイラスト描けるかな
Creative Ball Pen Art 04 Japanese craft book by MeMeCraftwork
Chat Illustration Kawaii Japanese Drawing by JapanLovelyCrafts
Small Kawaii Illustration Japanese Drawing by JapanLovelyCrafts, $23.50
Cute Illustrations with ball point pen
I love Ballpoint Pen Easy Illustration Book - Japanese Book. $20,00, via Etsy.