Help again

Erm honestly I really want to know how to customize your blogs,I only know how to customize my profile but I feel like my profile and my blogs don't match at all(⁠ ⁠；⁠∀⁠；⁠)💧...or most important, ¡¡HOW I AM SUPPOSED TO ADD PICS TO MAY BLOGS!!(⁠ノ⁠｀⁠Д⁠´⁠)⁠ノ⁠彡⁠┻⁠━⁠┻!!

¿Can someone actually help me? I'll find how to do it by myself anyway but it would be nice if someone made a blog explaining how to do it or explain me in the comments down below!!

It can be very long I don't mind reading huge texts!(⁠◡⁠ ⁠ω⁠ ⁠◡⁠)