Decorating is a very personal thing, and our homes should reflect our taste, not the trends we follow. That said, taste is a very subjective word. There are always exceptions , and what may look like a mistake in one room can work in another. But there are a few things inexcusable in all cases, whether for functional or aesthetic reasons. Check 'em out, and tell us if you agree!
Mistake: Excess Knickknacks
There's nothing wrong with knickknacks, especially if they're souvenirs or art pieces. But a whole wall of them that have no functional purpose looks messy, kitschy, and cluttered.
Source: Instagram user kathrynnordmark 
Solution: Edited Accessories
Not every object, souvenir, or accessory has to be out at once. If you can't part with any one, rotate them in and out, leaving only a few on your shelves at a time. Then, organize what's left based on complementary color or size.
Mistake: Matching Furniture Sets
Buying an entire set of living room or bedroom furniture makes your home look like a showroom. Not only is it monotonous and too heavy visually, but it also shows that you don't care about personal style, because you've let others (i.e. a big-box store) do the design work for you.
Source: Overstock 
Solution: An Eclectic Mix
Mixing metals, furniture fabrics, and patterns throughout your decor can and should be done. The trick? Keeping it all cohesive, like sticking to the same color family. The result? A look that's flawlessly layered.
Mistake: Fake Flowers
Fake flowers are bad, because they look cheap and will never come close to the beauty of fresh flowers. The absolute worst? Planting fake flowers outdoors.
Source: Flickr user chloester 
Solution: Low-Maintenance Plants
You never have to water fake flowers, and they never die — we get the appeal. But a comparable solution? Plants that are supereasy to keep  and way more beautiful.
Mistake: Obviously Themed Rooms
Look, we love Mad Men as much as the next person. But decorating an entire room, down to the detail, around a time period or theme is predictable and leaves little room for creativity.
Source: Wayfair 
Solution: Stylish Cohesion
It's totally OK to pick out a few pieces from your favorite era or style. (Look at these furniture legs.) But make sure it doesn't scream "obvious" by toning it down on other fronts (try using the neutral colors here) and bringing in other unexpected but harmonious accents, like an exotic rug.
Mistake: Bad Wall Treatments
Decals, wall stickers — they work sometimes (emphasis on sometimes), but most of the time, they come off looking like they belong in a kid's room.
Source: eBay user wearesurewin 
Tasteful wallpaper (or the look of wallpaper ) is a sophisticated answer that will add some color and texture to your space.
Mistake: Lack of Color
Sure, all-white rooms are synonymous with sophistication, but they're also painfully boring. Plus, they're completely cold and uninviting.
Source: Instagram user schmembot 
Solution: Small Pops of Color
Of course we love color all the time , but even if you prefer a neutral palette, you can find ways to incorporate hues into your decor. Word of advice: start with small doses via pillows or rugs.
Mistake: Too Many Cables
Having too many cables is a giant eyesore — and it's also a fire hazard. Use wireless products wherever possible, and if need be, just curb your gaming habit.
Source: Instagram user roy_cj 
Solution: Cable Camouflage
Hide all you can. And we know just how to do it!
These DIYs  use everyday items like washi tape to conceal all those ugly cords.