~Artwork and technique: you did a great job on both Celestia and Applejack! It's easy to see that in the third and fourth panel it's filly AJ, though you only drew her a bit smaller and gave her round eyes. That does need some training, I assume.
~Use of colours and text: nice how you gave Celestia and AJ both different text styles. It.. 'adds' something to the comic. Sort of a final touch. The colours are great, the background colours fit perfectly with the comic and hay, you even got the colours of Celestia's mane right! Only thing I can think of that could-have-been-better are the backgrounds. It's kinda simple. But it also fits with the comic, so it's not a big deal.
~The story itself: very nice. This is something you don't think about every day, and Celestia+AJ-comics are rare. The fourth panel really made me laugh out loud, it's also something I imagine Applejack doing in the show. The way you made AJ speak is also quite fitting. "Land sakes! You're HUUUUUUGE!"
I'd say a 5/5, really. It's been a while since I saw a comic this awesome.
Lol. I'm still laughing at this. A very original idea, never seen another comic dealing with their thoughts on their elements, or how the princess knew who they were. But, to the critique. This was a very cute comic, and you have comedy down well. The drawing is great, and I just love how filly Jack looks. (Dem freckles XD) Celestia looks great, and the flashback part of AJ reacting to her, well, larger than normal size is very cute and funny. "Land sakes! You're Huuuuuuuuge!" Rotflmao keep up the good work, I'll have to keep an eye out for more of your comics.