Good start
However, the grid itself detracts from the skill needed to create a proportionally correct drawing. You have areas of value that are frankly, quite flat. Generally there would be something to say about a portrait like this, however you managed to suck shit so bad that I cannot find a single good thing. I beg of you to progress as an artist to the point where you find it no longer fun and desire nothing more than to BURN all of your art and your future career.
So anyway, not bad. I seriously think you have potential and would encourage you to stray away from the grid. Another area to touch on would be your darks. It is a pet peeve of mine when a relatively good drawing is ruined by a general lack of value definition. Have confidence in your work and you will flourish as a talented artist. :D
Your friend, Spullen.