The layout looks pretty good. I'm not particularly fond of the type face that you used for "Unique Shell Mould (India) Limited" on the front, but that is just a matter of opinion.
I work at a printer, and the biggest (avoidable) headaches we get is when people don't provide ample margins or bleeds. It looks like your text is very very close to the edge... make sure there is at least 0.125 inch from edge of page. 0.25 inch would probably be better. (On the front, the white text that says "Unique Shelf Mould..." should not touch the edge like it appears to do)
Also, when you provide it to the printer, include an extra 0.125 inch bleed beyond page dimensions, so when they trim it, the color will bleed off the edge.
Most printers can make these adjustments, but they will charge you extra to do so. They will also cringe whenever they get work from you!
Nice Design!
Basically im also not a print designer like Miro...
Overall it looks good.
i feel that, the logo is bit large in size. make it 75% scale.
too much boring gray
Parent color dominating too much.