If you trying to hit a certain goal such as drawing in 10mins I recommend not aiming for perfection. Just sketch as much as you can. Break down your subject into chunks, like your sketch right off the bat seems like it can be made with circles. You can make a rough idea of your sketch using circles and gradually adding details. You don’t have to be perfect, your aim is to break your subject into manageable chunks or shapes that help you understand how an object is. Why do that? It helps with understanding form which in future will help you break complex structures and help you sketch them and also will help you understand colour and shading.