Well, this is how you know that your drawing skills are degrading people. It's when the stuff you use to draw isn't so easy to draw anymore. For the last couple of years i have been experiencing problems with drawing like an art block, less no time to draw with school work crazier than ever, lack of motivation, lack of energy, frustration when it doesn't turn out right, and my vision in my eyes is getting worse due to my stagimatism. I can hardly draw anime and manga like i used to, i have to start all the way from the foundations again. well, hopefully my skills will come back to me and improve.