I Want Some Feedback On My Art [NSFW]

Hello, I’m a new artist and this whole thing is completely new to me, so it’s a little strange to ask for some feedback from people.
 
I started getting interested in Digital Art back in 2010 when I took a Graphic Design class, sadly I didn’t have a drawing tablet at the time. Fast forward a few years later I have one, and over the past few months I’ve been getting used to it.
 
Lately though, I’m not sure where I’m heading with this but I want to see what I can do to make my art better. So it might be good to ask for a little feedback if that’s no problem.
 
I’ve made some NSFW artwork and posted a few things on here. I have a tumblr page as well, which is NSFW. I thought about doing some more SFW stuff later on.
 
My Tumblr
 
NSFW & SFW Anthro Stuff  
>>493801  
>>493963  
>>498529  
>>500768  
>>504284  
>>508004
 
SFW stuff  
>>495700  
>>496568

The faces are what bother me in almost every single one of these images, but I think that’s more of a personal preference, not something you can fix.