This is a lovely piece in general. In many cases, it is difficult to obtain such a bouncy feel in the drawing. It really feels like Pinkie Pie is standing right on that imaginary floor. All the effects in the hair are amazing as well. I very much find it adorable that you put a tuxedo on her. But, although everything is amazing, my most favorite part was the shading. I've never been vey good at shading, but this is awesome. The artwork is lovely, and I thank you for making it look so... Pinkie Pie. Great job, sir or ma'am. Please continue down the path of drawing.