One of the instructors I'm studying with at Sketchbook Skool sketchbookskool.com is Tommy Kane. tommykane.blogspot.com/ He talks of slowing down when we draw. Not moving the pen slower but taking time to draw all of the details...maybe spending 4-6 hours on a drawing.
I'm drawing stuff in my kitchen and I wanted to drink these before I finished drawing. It made me a bit anxious working so long, but once I put in over two hours I became quite enthralled with finding details. "Oh look I didn't even see that an hour ago," I'd say out loud. It got to the point where I didn't want the fun to end. Now to do it again tomorrow! Go to Tommy's blog tommykane.blogspot.com/ to see his fascination (well obsession) with details in his drawings. His work is brilliant!