Definitely invest in a fluffy brush!!! The inglot one you're using is great for packing on color but not so much for blending. A fluffy brush will help tons!! But I will tell you when I was a complete noob, I had a fluffy brush and I still had blending issues. So hopefully these tips will help no matter what brush you use!
Play around with pressure. Try blending VERY very lightly and see how that does. If it doesn't blend at all, add a bit more pressure and so on until you find what works best for you. Sometimes applying too much pressure can wipe eyeshadow off instead of blending it.
Also play around with color layering. Most people apply the darkest eyeshadow last. It's usually not a problem but it can be for some. For example, let's say you have applied your highlight, lid, etc. colors and now you're working on your crease (typically the darkest color). If you make a mistake such as applying TOO much of the darkest color, now you'll need to blend it out. But since you've already put on all of your other eyeshadow, that excess blending will smudge everything around, thus 'erasing' the color.
If that's the case try applying the darkest color first. Blend it how you like, then work on the other colors. If by the time you're done the dark color is not as dense as you wanted it to be, pick up a very light amount of that same color on your brush and lightly add and blend more.
Colors not blending well into each other? Like blending black eyeshadow into white eyeshadow. It can help to use an additional color somewhere in between the two, in this case a gray color.
get your blend on girl!
