Based on the time and color constants i say you id a marvelous job. This is a good representation of what pinkie would look like as a spy, and i love how it has three eye holes. it just fits pinkie and looks great. For three colors you did a great job fluently representing all the colors one would find and expect in a pinkie drawing. It makes you think,"why is she a spy"' It clearly shows that it is Pinkie without a doubt and is appealing to the eye. Wonderful job on this single frame and Will be waiting for more art from you in the future.
I am really liking this! I have seen so many pinkie spy pictures but this one is definately my favorite! The use of detail as well as the originality is great. Your shading and detail is spot on and I love the expression that you gave her! Great work! I would love to see more in the future!