Contour/blending trouble

Can someone help me please? I've tried so many times to contour and watched youtube videos, but I cannot for the life of me get my blending down. I feel like once I have it "blended" it's in one long oval from the hallows of my cheeks to my hair line. It looks funny, and I can't figure out what I'm doing wrong. I don't have the best brushes (elf&eco tools), so idk if it's me or the brushes I use or both. I really want to get this down. And what products do you prefer for doing a contour?