Your X axis is backwards. There are a few ways to handle it. You can unplug the X axis connector from the ramps board and flip it over and plug it back in. Another way is to go into the firmware and invert the X axis. I’m not sure which is the “best” way, but either of those will reverse your x axis. Flipping the plug is fast and easy.
Ryan will respond eventually with a much more experienced answer, I’m sure, but it wouldn’t hurt to just flip the plug and give it another try.