Needs more time
It is very easy for below average artists to churn out works that aren't up to scratch. This is one of those below average pieces that you need to work on, in order to set yourself above other artists in that same situation.
The piece is poorly drawn, at best. The mouse gives very little control here, but as a way of offsetting this, try zooming in and taking more time on the drawing, as when you zoom back out, you will have a better looking piece of work.
I think that you've failed to grasp how little people's face size and shape changes over the years. If they put on weight, their face shape may appear more rounded, but it age will not make the shape of the face change to that, which is reminiscent of a squid. I can understand the idea of a little receding hair line and facial hair, but perhaps you need to start with a baby, in order to get this working nicer - baby, child, adolescent, young adult, middle age, old age.
I can't over-emphasise how much you need to take your time with the drawing of this and if you can, invest in a graphics tablet and practice using it.
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