Most Recent Updated Portfolio-Please critique

Hello I have just made changes to my portfolio based on feedback from Free Code Campers. Please let me know where I could improve. Portfolio Site

I am having a little trouble with speed (Chrome on a laptop), probably because of the background images you are using.

Spend some time for better design.
Icons can be smaller.
There is a little line, here: Screenshot_2,
and here: Screenshot_3
Calculator - when mouse is above the buttons, they are black - the numbers should be white (probably).
Also i can add some margin-top for de aplication.

Off the top of my head I would say next time design with more padding in mind!

I think its really good though.