If you really want to make a great font, my suggestion is to do a little research. I think you'll find the world of typography being extremely intricate, and to many, it's easily overwhelming.
Keep in mind you'd also have to create a lot of missing glyphs (there's only 6 different characters in "Aquaria", if you correctly consider the capital A as it's own glyph - leaving at least 46 more, plus numbers, punctuation, perhaps accent and diacritical marks...).