Graduate / I discontinued my studies in Design; Motivation letter to a Design School [4]

Its been a while since i wrote a letter; anything other than dictated words for that matter. Desperately looking for some help in revising this one.

"
I am writing this letter with interest in the Masters course. I was browsing through some information about how to convey an idea from the concept stage to design to the end result, and I stumbled upon this course at XYZ.

For your reference on my background, I have enclosed my resume and the link to my portfolio. My interest in design goes back to time, since I can remember, making sketches of my favorite action figure- He-Man. Ever since I was introduced to drawing, I have always been facinated by everything to do with color, shading, lighting, games, etc. I developed my designing skills all along the years I have spend in researching and learning, through courses and resources available to me, and always felt an incompleteness in conveying my final designs. Fluency and skill in using a software helps a person to design his or her idea, but the real challenge is to communicate it, which affects, and has an effect on people. I studied in a design school, but discontinued as there was a clash of interest in courses offered.

I have read an understood the criteria offered at XYZ. I am an open book and you are free to ask me anything. "

I desperately need to make this more of a motivational letter than anything else, as i am desperate to be accepted at this university. All your criticisms and appreciation(if any) are required.