Looking for outside help with architectural design of my home

I need help with the exterior design of my house that we bought a few years ago. I have posted pictures of the front of the house. We want to keep the roof color unchanged, but we want to refresh the facade. We are considering imitation half-timbering. We like the design that combines elements of gray (I have attached an inspiration board for this project).

The front of the house has very old columns (we want to improve this), along with the entrance area - we want it to be remodeled to look modern.

The back of the house has different window heights, so we thought that maybe with the half-timbering we could visually blur these differences and hide this asymmetrical look. We want to improve the terrace at the back by replacing it with nicer pavers/concrete steps.

We are looking for a proposal for a facade design that is feasible at a low cost.

All files can be downloaded : https://wetransfer.com/downloads/36c51511388aef5493759542c160217620240324141143/2e56e5