The picture is good and I like what you've done with it. Since you asking for suggestions, I have one that will help you out. When it comes to drawing/coloring tears or sweat, the trick to making it look more real and less like running water is to color more lightly and to make the tears/sweat translucent, and also by not drawing the outlines of the tears too completely. By doing this the picture won't suffer from it and the tears won't look like some sort of ooze or jelly seaping out.
Unless the crying/tears/sweat is some sort of comedy gag, then its better served to make the tears/sweat less pronounced. 🙂