really rough and crude line/shapes, refinement on everything would be nice..
the mapping looks alright, but since you're not showing the back, i'm to assume it's just
plane.. which is boring (if it is)
and lastly, your shading is way too minuscule
The past makes you wanna die out of regret, and future makes you depressed out of anxiety. So by elimination, the present is likely the happiest time.
That looks better. Now, the only thing is how much white you've put on the brow of the eyes. It seems a little too white. Unless that's what you're wanting.
"Dear reader, I hope this email finds you before I do."