Will travel

So this is my up date to the late "will o wisp" He is now Will Travel. new cutie mark and everything. this is my first vector and it looks pretty good but i think i did something wrong, as it gets anti alisish when i zoom in. which is odd cause i swear i have that turned off due to spriting. also appolgize for this image as i've shown it a few times. but i wanted pratice on something old you know?