>>5947914There's no way, specifically. But I know how to, but I can't tell you. My mouth has been sealed once I figured out the truth, the so called "secret". Now I just do and get big gain in art daily.
But if you still want to hear my rambling, then here it is.
The idea is just pick up one concept, anything, but if you want an order. It should be perspective => construction => render. Choose it, pick up a good book, read it, follow the instruction, then observe, compare and fix it until it looks good. Throw away your eraser and the redo button because they only get in the way of your observation skill gain. Don't aim for perfect lines, technical correct, aim for general simple shapes, appealing, experimenting and pushing boundaries.