What if it was just... a *little* less like a perfect tear?
That could help, but it shouldn't affect your story/world *too* much. I mean you don't describe every single feature of the land, right?
Like, say... (Beware my elite MSPaint skillz!)
Here, red would be the land outline, green is where your SAME mountain range(s) would end up That would mean the same green/foresty areas you have could be bigger, but you'd gain space for desert too:
Also, "desert" is an area without a lot of rain. It can still be green, if there's water from elsewhere... like a gigantic river flowing from somewhere that *does* have rain.
A place can also be hot and dry (or hot and humid) even with plenty of precipitation, if there's stuff sopping up that water.
I don't know what you've written so I can't tell how much that will help (or not ... )
Anyway... okbye