I suggest a large curved flower bed from the tree and extends towards the driveway. The perimeter should be curved to go with the arches on house. Add flowers in yellows, oranges, and red, as well as various greens and grasses, and some lights. I also think purple flowers would blend with the house a little and would be nice but wouldn't pop. For the existing beds don't have shrubs that will grow taller than the windows.
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Hi Marlene! Do you think these colourful flowers are seasonal?

I all out love the design of your home. Wow!
I would hire a landscape designer to finish the front yard landscape design. Just like Marlene said I would add some curved beds. I would also change the walkway to pavers or stone. You will need some larger shrubs or trees to soften the area in-between the front door and garage space. Landscape lighting is also a must too.

Seasonal...do you mean annual or perennial? Annual you plant every year, and perrenials come back in spring. It will depend on the planting zone you are in.

bluenan i like the vase idea for the sides of the door. But what we did for the flower bed around our tree ishusrikanth is we took hanging flower pots, and dug indentions in the bed around the tree, and instead of hanging them we planted them, which made it look like it was overflowing with flowers due to the fact that hanging pots are supposed to overflow anyway. It takes a bit more watering, but with a sprinkler or just watering it everyday, it should look perfect. And for the beds in the front, some bushes would look very good there. Hope this helped. :-)

A hedge row along the walk of boxwood with ornamental urns at the door would look lovely !

soften the entry to the front door with a meandering brick or stone walkway. Then add colorful flowers under the tree and windows along with some mid-height bushes for height variance. A couple of formal topiaries flankng the front porch and some flower boxes under the portico and above garage windows.

Here is the clear picture of it! Plz take a look

MarleneM, very nice. The home is beautiful, but I was a little lost on how to landscape a home of this size. Landscaping is my husband's area anyway. However, I love your ideas. A grand home like this needs some grand landscaping.

https://www.google.com/search?q=grand+landscaping+for+small+yards+with+large+homes&tbm=isch&tbo=u&source=univ&sa=X&ei=Ebi0U7j7A8SwyASmx4LQBw&ved=0CBwQsAQ&biw=1188&bih=564#facrc=_&imgdii=4446YbuOSPMrkM%3A%3BKPVXkXkK_BD7fM%3B4446YbuOSPMrkM%3A&imgrc=4446YbuOSPMrkM%253A%3Bu77CQlsIyJfrYM%3Bhttp%253A%252F%252F4.bp.blogspot.com%252F-wxgLHi8Uj_4%252FUbnWBMX4PnI%252FAAAAAAAAA4E%252F02ABEX6eOlg%252Fs1600%252FPhoto-gallery-for-front-yard-landscape-ideas-click-to-view-in-large.jpg%3Bhttp%253A%252F%252Fdie-piratin.blogspot.com%252F2014%252F02%252Ffront-yard-landscaping.html%3B1500%3B998

Hope the above helps a little.

Thanks Susan!

Does these natural stones in the landscape a better idea Or cut stones give better look? Also someone plz suggest some annual coloured vibrant flowering plants!!!

I thought even before I read your question, when I seen the close up pics the first thing I thought was the stone was too casual for your house. So I think cut stone, but if you like stone, add a few larger rocks in your planting beds. It gives a natural look and look best if you dig them in a bit rather than just placed on top of ground. I live in a zone3 planting area so I'm limited with plants here, but I like wave petunias if I want to fill in space and have lots of blooms and colour.

Here is a link to Better Homes &Gardens site. They have an A-Z listing of annuals with picture.
http://www.bhg.com/gardening/plant-dictionary/annual/page1/

This house needs a formal connection from the front door to the street. The garage bay and volume are overwhelming. Also, some evergreens towards the neighbor on the left will help to separate the houses - and screen their utilities.

Rhodos!! And along with hostas in the front, lots of lavender along the the driveway! Keeps it interesting all season.