Top Left:
Liked most among all. But there are few comments:
1. URL is too small compare to other fonts, which is really important for a company.
2. You used 3 different font sizes, which sometimes messed up, exactly what is happening here. I personally don't like to use more than 2 font and more than 2 sizes in Business card/letterhead. But if you can manage, then ok.
3.No need to bold the company address. Always try to emphasize in one/two things in card.
Top Right:
1.Looks like a ATM/Credit card.
2.In business card: whatever you design, you have to ensure the objective of the card which is make it readable. Red on black background is vibrating. Tough to read.
Bottom Left:
Also liked it.
1. Did the URL beat you? Make it larger.
2. You use gradient in lower left which is trying to hide your text.
Bottom Right:
Nothing to say. I think I covered most of them in previous comments
I have designed one based on your 1st design to show how you could make it more simple and nicer.
Ekta chhotto kotha: emon kono business card design korben na jeta kauke deyar por she wallet ee na rekhe fele dey. Emon business card design korte chesta korben jeta kauke dile she arekta cheye ney to show someone what you did
thanks