Derpy half haired in the 80's

having much experience with mlp customs, i know what im talking about here! PONEHS ARE SERIOUSS BERSNERS. (sorryihadto)
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to start things off, you should take a picture from a different angle. its kinda hard to tell what she looks like from this veiw.
i can tell you included the light reflection in her eyes. and thats good!
her cutie mark is pretty detailed. and thats a good sign too. this shows you put effort into her.
her coat color is a bit off. she should be a light dusty blue. (at least thats how i see her XD)
and her hair is... nice XD you just got the wrong hair thats all. ive done the same too with my first derpy. so dont feel bad.
overall, she came out pretty good! keep practicing!