@lijj: tbh the designs aren't made by me. Those are art Nouveau furnitures, I had lying around in my reference folder.
I am doodling a lot of stuff, just to see how it's made and how the style works. Sketching is for me mainly a practice of getting things in my head, basically short notes on how something looks.
For sketching I have usually a topic and doodle stuff for that topic, or I have a subject and draw it out of different views.
first practice is mainly for learning styles and details
second practice is for improving on proportions and inventing things in space.
busy day again -.-
just doodled some random skulls, weren't really carefully, concentration dropped quickly, the ones on the right side are somewhat alright.