Some of the values on your paintings are really nice, some aren't but in general they are great.
I really think you are overdoing it with the filters tho, i dont think it adds anything to your pieces.
If you are using them consider using them a bit less so they aren't that obvious.
And you want to work on your anatomy, in particular learning good proportions would really crank up the quality of your work imo.
Really like this one btw, it has a far greater edge control than most of your pics. Keep it up dude!