Whatta... i am experiencing right now? I know there is something called artist block but i think i am having "painting skills block" right now .. Do not laugh at me , i am serious ! What's happening ? I was not like this Help !
Have you tried dabbling into some other form of art medium? I know whenever I get like that I just usually try a different art medium. Like if I can't draw anything digitally on my tablet to SAVE MY LIFE. -_- I'll either draw something traditionally with pen or pencil. OR if that doesn't work I just look online for inspiration until I have enough energy/motivation to draw it. Usually I think when this happens you need more of a push to really get you going and back creating art. You may not be as motivated as you'd think to do a drawing. I know when a drawing isn't coming out right for me, I will (if motivated enough)will keep at it until I get the drawing or the technique right....it doesn't matter how long it takes me. So just find that motivation again.
I think I know what you're talking about. Only, I had this "skill block" in drawing with pencil. It helped me to look at other artists' work and try to figure out their process of creation, techniques they used, tutorials they had made or recommended. Trying different approaches to illustrate has always gotten me past my blocks- eventually. Some times have taken longer than others, but changing what I do during practice is generally my most successful method of recovering from said block.
Maybe your forcing it, you know, sometimes when i start doing things i want to do them as fast as i can, but it doesn't work that way, you sure can continue your work but do it slowly, slack a bit do something else and remember "don't pretend too much".