We may need more photos but the first thing I see is that the glass elevation is fairly contemporary, however, the gate and grate on the lower elevation deserves to have the horizontal lines of the upper railing. The entry door that now appears to be wood toned ought to be painted white to match the mullions on the other elevation OR be painted in a contemporary bright. Since the house appears to have a pale green/yellow on the stucco above, a great color to go with the pale lime for the front door would be turquoise, or purple. All the white that now has some gray (stucco repair) needs to get a fresh coat of white. Need more photos to do more.

i am not sure whether there is an app like this. If you can work in photoshop, you can take the texture and images from google and apply. Or you need to get an architect to design an elevation for you. We could also help you in that but it would be chargeable.

The colour examples are in the FB link bottom in the text.

You're Welcome Mr. Patel :) Yes there are some plants that are better suited to indoor environment here's a guide for the same: but no plant can survive indoors indefinitely. you will need to to keep rotating them weekly or every 2 weeks. are you partial towards glass then sure it can be used. maybe paneled glass partition or a stained one like you mentioned earlier like these: The room does seem a little cluttered, which maybe because of the many different styles and no of things too. I think that can be helped by lightening the space a little and maybe bringing in a bit similarity specially the side tables and coffee tables . i have suggested the sofa upholstery color in the previous comment. shades of sage in velvet. if not then light beige in linen is also a good option. Something like in this picture https://www.houzz.in/photos/architectural-digest-india-march-april-2016-farm-house-in-delhi-phvw-vp~70030021 https://www.houzz.in/photos/vila-by-the-sea-phvw-vp~55949655 https://www.houzz.in/photos/aptes-bona-fide-expressions-phvw-vp~112062304 https://www.houzz.in/photos/sex-and-the-city-phvw-vp~94528292 https://www.houzz.in/photos/brentwood-transitional-home-phvw-vp~99412992 some bright colored cushions and an accent piece of sofa or some bright table cloth might also be good. as for curtains that will depend on the sofa upholstery you use. If you keep the same upholstery i think a nice pastel color would look better. something light. you should also choose light cushions and carpet for these sofas. and if you keep the same sofas i think you should atleast change some of the tables. I would also suggest bringing in a little more light to the room if possible. I hope this helped you. :) Best of Luck, Purva Saksena