fabricating dash pieces to cover holes

Happy New Year everyone. Hoping to get tips on my current situation.. I have installed a double din system that currently looks like this. The obvious problem is that there are two "holes" after the install. I have done research on double din kits such as metra and scosche but nobody makes them for my car (Lexus IS250). So the only solution now is to fabricate two pieces that will fill in those holes. Something similar to the bottom picture is what I want to achieve. However, I'm not sure how to go about doing that as I am limited in the tools that I have. Any suggestions as to how I can tackle this problem?

Have you done f/g work before? If not i wouldnt suggest starting with those pieces. I would contact your local car audio shop and see if they could fab those for you, it shouldnt cost to much.-A vision without a plan is just a hallucination-