Don't put drawings out there. I made the mistake of when I forst got here, I kept putting low-quality drawings of the same thing. Instead of going for quantity, go for quality. Put more time and effort into your drawings.
Designwise, the Saturn Boombox is aneat Idea, (kinda of a boxy Opel Corsa, maybe?), but the Minitauro is a direct copy of DoMiNo at CSS. If you do use another members' Idea, make sure you change it to give it your own personal flair.