Once, I created a "Moby Dick", a movie poster for English class.
Though far from perfect, the poster was a work among the few that I was confident in
--> this sentence makes me think that you are often unconfident about your works. what about just say "one of your favourite works"?
Not only did the poster gives me joy in the process, it also showcase my inner creativity to my teacher, who must have had to grade many "stick figures" posters already .
--> the "poster" didn't give you joy "in the process". It should be "making this poster brought you much joy" or "I found great joy in the process of making this poster".
By using PhotoShop , I can translate myself into a visual representation while showcasing my talents, oddities, or even idiocy, and aspects that are hidden behi nd my quiet exterior.
The images I create represent myself, a ticking time bomb waiting for the right moments to burst and perhaps transform those fantasies into reality.
--> Something wrong with this last sentence. What "transform those fantasies into reality"? What is the subject? "a ticking time bomb"? "myself"? or "the images"?
hope this would help!!! BEST LUCK!!! :)