Done with the mouse...not bad.
You got the lips very good and the shading is soft and overall well done. However, it look a bit awkward around the chin.
Also, the eye...
Explaining it is hard, so my recommendation for you is to look into facial and skull anatomy (again, if you already did so) and try to draw faces and skulls from different angles.
Additionaly, look into eyes in general. Eyes don't look like that in reality (implying you were going with a realistic depiction, but even if you DIDN'T, it STILL looks off).
Last, but not least: Lens flare filter....just no.
My word of advice: Don't use it in an illustration, ever. If you want to have a lens flare, do one yourself without using this filter.
It's a very pretty artwork, but flawed. For an 1 hour mouse speedpaint, it's very well refined, but the flaws listed above realy pull it down. Anyway, keep practicing, maybe invest into a tablet (a bamboo is "just" 100€ if I recall correctly) and give yourself some time to check trough your artworks a last time before calling them finished (and maybe uploading them). You will notice how much a last check will help you in finding flaws in your works.
Hope to see more of you in the future. Keep it up :)