Well this is a new one for me.....and I've been in this design field for 30+ years. Looking at your elevation it appears you're using overlay doors. Meaning the door is outside of the the frame front......I'm guessing your cabinet maker is seeking an elevation without the doors so he can see the frame fronts and get a better look at the configuration and the size of the cabinet units. While I know of many cabinet craftsmen who could take your sketch and run with it.......one thing I always tell young designers is to draw with a thought in your mind as to how is the craftsman or contractor going to build this either in the shop or in the field. I would suggest that you download Google Sketchup (it's free) and easy to learn how to use it. Then I would suggest that you actually build your cabinets piece by piece just as you would if you were building them in the shop Start with the base, add the frame front the sides, back and supports. Then you can add the drawer fronts and cabinet doors...........if you get really into it you could build the actually drawer units individually....... I do this for every custom design home for clients. Cabinet makers love it, because I'm basically giving them a shop drawing, complete with dimensions and I'm confident that design fits in the intended space down to the width of spacers I need. I also give this package to the framing contractor so he know just how exact I expect his framing for the space to be.

The built-in wood design of the adjacent cabinet is clean and modern. So as not to waste the under stair space and not interrupt the clean spare look, I would put in a blind door that matched the zig zag of the stair, with barely visible hinge hardware on the left side (probably will need at least two and maybe three hinged doors), then matching the exact stain and wood, create a blank slate look, flush with the cabinet and wall trim. And, there, hang a piece of artwork, or wall sculpture. Keep in mind, when you do this, the white of the zig zag stair will pop, but I don't think that's a bad thing.

Thank you Laura for your response 1. I would be buying new furnitures 2. The door that you see in image 1 is the main entrance to the house , opposite to that is the passage to the bedrooms 3. In the image 2 the opening you see next to the main entrance is the kitchen area 4. I do not have the exact dimensions with me right now but I can give it to you soon ..but as you correctly said it is kinda skinny and long 5. Also there is 2 feet space ahead of the window which if we want can be extend in to a window bay or a sit out sorts

@Rock Doc: Are you addressing this to me? I haven't actually bought these tiles yet - when I do, I will definitely be going for the handmade ones. They're a work of art and irreplaceable in my opinion. However, there are also screen-printed tiles available in the market in more or less the same patterns; the workmanship is of course different, but you get them cheaper, and they're also more easily available. You could give that a shot. I'd recommend Aakaar Flooring Solutions - they're here on Houzz and are able to provide both the above-mentioned types.