Unless you have a boatload of money to hire a landscape architect, you're not going to get the effect you desire overnight. It takes time. You're on the right track tho. Two things I would have done differently.
1) Nature never does anything in a straight line. I would have put a nice (S) curve, starting from the end (front) of the house leading to roughly where the tarp is. By creating that curve, you cut off what your eye is drawn too, which is that gate. It's a nice gate, but you want peoples eye drawn to your lovely plantings.
2) The white rock needs to go. In a natural path setting you will see more muted colors like natural river rock, or decomposed granite. Again the eye is drawn to that white intensity, taking away what what you are trying to achieve, which is the serenity of your plantings.
One other thing I'm seeing in your photos is the buckling of the siding on the side of the house. Looks like a real hot zone, so you might want to pay attention to that as well.
I'm on my fourth year creating my front flower bed, and is a labor of love. Each year I add more plants, then sit back for the season to see what they do for me, and if they like where they are planted. More often than not, they will get tweaked in the fall, or removed completely. When I first began the project, pretty much everything I planted was roughly the same height, which didn't look natural at all. So even tho it's been four years in the making, I'm still learning the do's and don'ts. Take your time, feel it out, and I'm sure in the end you will have something to be very proud of.
I was outvoted on the curvy path and white rocks.
So I'll work around them, I will widen the path and curve the outside and add a few more large plants, we've removed that gate and are putting in glass there, hopefully it will soften it a bit.
It's very hot by the buckled siding, I've chosen full sun plants but will keep an eye on what's HAppy and what's not. I know I need to be a bit more patient with growth but I just know the straight line is NOT what I wanted.
Thank you