Not because the minimap doesn't look great, but because it doesn't even remotely go with the rest of the UI.
To speak about the rest of your UI: There's a million things I'd do to it, but I'll run through basics.
First of all, you have two Player frames, and I don't know why you'd have that.
I'd definitely change the texture of the Unit frames. The current texture makes the UI look bulgy, which contributes to the entire UI looking messy. I'd also reduce the width on all frames (save for ToT). It would save you a lot of screen space, and there is little reason you'd need them that wide in the first place.
Your Unit frames aren't set up at all, and have the out-of-the-box settings. For example, ontop of having two Player frames, you also have two Cast bars.
You have unnecessary information on both your Player and Target frames. For example, I doubt you will forget your own name/level/class/race. It doesn't need to be there. Furthermore, you don't need to write out the class of your Target frame, if you're going to have its Health bar in class colour. Race is also rarely important to know, and so you can save more space by removing that from the Target frame, too.
Your Mana bars are really a lot thicker than they have to be.
Your ToT frame is a simple copy of your Target frame, but at a reduced size. Text on ToT is almost unreadable. Also, you don't actually need most of that information available.
Font colour. The font colour on your Player/Target/ToT, Boss mods, Action bars, Cast bar and buffs is white. But the font colour of your raid frames is yellow (and also barely readable). I'd use class colour for names across the entire UI, and colour the Health bars in a single colour instead of having them in class colour. This would give you a much more consistent design, while still holding the same functionality.
The font is also different on your Cast bar.
You don't need your Bags bar to be displayed. Especially if you're running a Bag addon. You can also make the menu bar only visible on mouse-over to save you some more space. I'm sure you can find a more suitable placement for your Aura bar.
.. And then we come to the Minimap. As I said before; it does not suit the UI. But if you're adamant on keeping it, you should fine new free space in your bottom-right corner after removing the Bags/Menu bars. This would make it look more in place. And you could then re-align your buffs to the side of your screen.
I also would not have that many Action bars visible, but then you appear to be a clicker. If you could go down to only having one bar at the bottom of your UI, you could save even more screen space.
And your Player and Target frames do not appear to be aligned.
Anyway, good luck.