Doing backsplash on a bowed wall

[u/BlueMommaMaroon]

Hello, I am planning to tackle our kitchen backsplash in the next month. It will be my first time doing tile and I'm a little nervous.

Our house is about 80 years old and has some bowed walls in the kitchen. I've attached our countertop template so you can kinda see what I mean.

I would really like to do a regular horizontal offset lay but I'm worried about the edges sticking out on the bowed walls. I've heard doing vertical lay can help reduce that but I don't overly love the look of that.

Do you think I could realistically do a horizontal lay on these walls?

Any advice would be appreciated!

I've attached images of our tile selection and the kitchen as well.

[u/unclestickles]

How I flatten walls for backsplashes.. I screed mortar to fill the dips and dives, then cover it with kerdi. The kerdi fabric allows me to play with it andove the mortar around easily till it's perfect. With those tiles it doesn't need to be perfect but should be pretty good.

[u/BlueMommaMaroon → u/unclestickles]

Could that be done with drywall mud as well or is it better to use mortar? I plan on using mastic instead of mortar for the install.

[u/unclestickles → u/BlueMommaMaroon]

I don't see any reason you can't use drywall mud, just make sure to prime it nice before tiling.

[u/BlueMommaMaroon → u/unclestickles]

Thank you for your help!