How to sketch something accurately?

I close my eyes, and think deeply. It helps extraordinarily if you close your eyes. The darkness you see can be used to visualize what you want to draw. I constantly picture what I want to draw by shutting my eyes. I have to admit, I can sketch pretty hardcore, XD. Good luck with your sketching!

I don't have any tips on sketching and drawing, but after I saw the picture you attached to this discussion, I felt I should respond. If I had that mental image in my brain, I could definitely try and sketch something. It wouldn't be exactly the same, but fairly close. Maybe I need to look at real pictures or real models so I can be realistic. he he he...