What I am saying is that your "peers" (you keep using that word, I do not think it means what you think it means) have no bearing here. You aren't presenting your images here for their critique, you are presenting them to the members here.
The bottom line is this: You have admitted to having ZERO formal training in graphic design. You have had people with experience offer you advice. You have chosen to get snarky instead of listening to said advice because they weren't nice and cuddly about the way they said it. If you won't take the advice offered, why should people keep offering advice?
I have had some (admittedly not as much as I could have) some training and experience in graphic design. You NEED to learn the fundamentals before you can hang out your shingle. It's not like slopping paint on a canvas and calling it art. There are technical issues you need to be aware of, like vector vs raster, color pallets, file formats for printing, etc. It's like buying a DLSR and then deciding you want to do wedding photography... sure you can do it, at least once or twice. Then word will spread that you don't know your stuff and you will be tarnished forever. If you start taking on clients without knowing even the fundamentals you are just hurting yourself in the long run. Worry less about a business card and more about learning your chosen trade. When you know your trade you wont have to ask anybody for an opinion on your business card