Anyone work with beveled subway tile?

What edges are you trying to finish? I think 3 x 3 is a very unusual size for any tile. Usually they're 2 x 2 or 4 x 4.

The corner edges? They don't need finishing.

Could you stand back and take a picture of the whole area?

You could try running a line of colored caulk along the edge. Choose something that matches either your tile or your grout color and it should cover the edges of the tile and give it a more finished appearance.

I'm not sure I understand what the issue is. Are you continuing the tile around the corner? If so, either work backward from the far side to where the tile will end. This is perfect if you plan to put something in the corner such as coffee pot, etc.

If you prefer the corner to have as many full tile pieces as possible, begin the tiling from there. Any "oddities" can be touched up with matching paint if they bug you. I had odd shaped cuts on my black subway tiles so painted the cut edges black.

U can buy edging material. It comes in metal and plastic

We have not gotten to the area the we want to end at. Which is under our cabinet that leads to an opening. The tiles when cut in half are thick and we really can't seem to find a border tile that is high enough. The ends of the beveled tile are half as thick as the center. So when they are lined up half against full, ugh. If you look at it against the bullnose trim we have in the photo you can see the difference. We were just looking for what others may have used rather than bullnose. I really hate to slop in a lot of grout.

Would it be really incorrect if you butted together 2 half tiles? So they made a "whole half" to fit there? That would give you beveled edges at both ends, and fit in with the bullnose at this end.

We have not gotten to the area the we want to end at. Which is under our cabinet that leads to an opening. The tiles when cut in half are thick and we really can't seem to find a border tile that is high enough. The ends of the beveled tile are half as thick as the center. So when they are lined up half against full, ugh. If you look at it against the bullnose trim we have in the photo you can see the difference. We were just looking for what others may have used rather than bullnose. I really hate to slop in a lot of grout.

My kitchen is done in beveled subway. Take a look at the edging that I used. I used a thick pencil tile (not wide) to make my ends. You can see my kitchen here https://www.houzz.com/projects/1228721/tennessee-home.

This is my Houzz site. If you get lost, just click on Tennessee home. :-)

If it is the corners that you are trying to solve, the answer is to miter the half cuts. In the future, try starting your beveled tile at the wall corners, with half cuts mitered, and work your way out from there.(instead of working your way towards a corner) You then make small incremental adjustments to the spacing to get it to end at the desired point at the opposite end of the wall.