It's such a beautiful house, and honestly I don't think you need to do a single thing! But if you're itching for some ideas here are a few!

1. Paint the flower boxes to match the front door

2. Add shutters (same shade as front door)

3. Add flower boxes on 2nd floor

4. Add a couple tall shrubs/small trees to add depth to the front landscaping.

Here are a few inspiration ideas for you.

Agreed. Shutters!
This house is absolutely gorgeous! So much potential!
I’d love to see what you do with the interior too

Properly sized shutters won't fit. There will be no space between them. The house is nicely proportioned, it does not need more "dimension." I'd paint the front door a brighter color and echo that color in the landscaping. A house in my neighborhood is white with a coral door and they always have coral impatiens in their window boxes and plantings. Very simple and effective.

I agree it doesn't need much but I think the front door could be a brighter focal point. Paint it and the window boxes a matching hue such as blue or green. Add the white flowers pictured above.

No shutters...I like the simplicity of the lines as is. I don't have the greatest software but here is my concept.