Avatar help

[REQUIEMnJADED4U]

I did a forum search and didn't find anything. I clearly can't handle the complexities of setting up an avatar photo to my profile. I've tried a few image hosting sites that let me resize pictures to the 150x150 pixel limit but 2 things happen. The picture still exceeds the 19.5kb size limit and it looks worse than Atari graphics. I can't find a site that lets me change the size of the file as well and one that doesn't make it look just plain awful and blurry. Does anyone have a site, app, or tip they can share? I see so many profiles that such clear and vivid pictures as their avatars. Thanks in advance!