Hi. We have changed it to a 8 X 6 in the new plan as we felt the earlier one is too small. Yes, an enclosed shower stall would be great to keep the dry and wet area separate. However, wondering if it is too small.

conditions are both shower area and bath tub are required in the bathroom.

It's a bit hard to tell, it looks like some of the proportions are not correct. Given what you have drawn it looks like entering and exiting your shower is going to be awkward. I'm not certain that you'll be able to open the door all the way because of the placement of the tub and vanity. Here are a few suggestions: Ditch the corner tub, and use a rectangular one that is installed with the long end on the wall opposite the vanity and shower and install the toilet next to the tub. Slide the door to the right, and you'll be able to have a larger vanity and/or shower. If you can use a pocket door or something of the like you'll gain wall space like sandpat mentioned. I don't see any storage planned. Have you thought about where you'll keep towels, toiletries, etc-?

I have a bathroom of dimensions 8" by 4.5"....how can I fit a commode,a basin,a looking glass,taps n a shower