Such an incredible, sweet and gorgeous piece of Touhou art we have here :3
You said... you did this with... Paint Tool SAI?! Oh my GAWD! This is so impressive and awesome! Just look at all those clothes foldings on Yuyuko's dress and in Yukari's. owo
Also, check all those ghosts that are around Yuyuko... they look amazing and really well done! You also did the dimensional rift of Yukari behind her, with the creepy eyes, which looks really neat and well done, with their creepy essence
Yukari's umbrella looks also well done, and their clothes design too, you aso did the butterflies design on Yuyuko's dress follow the surface of the dress! I also love the way Yukari's hair is blowing with the wind with all those cute red ribbons <3 (I guess Yukari loves red ribbons XD)
The cheery blossom tree looks really gorgeous with all it's petals, this is indeed an splendid piece of art.
Congrats, Noka-chan on achieving such a great art skills with SAI and creating this splendid Touhou picture. You have won a mega cookie.
Very good. Actually amazing. The only part i'm a bit iffy on is Yuyuko's hair, but it still looks good. I prefer adobe illustration for making stuff like this (though i've never made anything like this, if i had time i know could)... not sure why. Anyways, amazing job.