I like what I’m seeing, but as someone who’s been creating fonts for a few decades, may I suggest that you be thorough in your kerning (letter spacing between select letters in a specific order), while letter spacing in general takes care of a lot, Good kerning covering the WHOLE font is a major sign that the creator has cared about quality. Also include accents for all of the European languages, all of the monetary symbols (cents, dollars, Yen, Sterling/pound), this keeps your potential market larger, which in turn means more potential users and income for you. A good collection of alternate glyphs/characters is all a major plus.
Create stunning sample images, like a book cover, they are often the biggest influence over potential buyers. They can spark buyers imagination in seeing where and how they might use your font(s).