HOW DO I ADD PHOTOS ON MOBILE ????

this is actually frustrating me so much cause I have a school dance today and I wanted to post pics of my dress and all that once I put everything on, but I’m on mobile !  so I can’t !

I’ve looked up how to do this before, and I tried stuff, but none of it worked,,, so if someone could help me out, that’d be greatly appreciated !  per favore è grazie mille !!!  >_<

also if someone could help me get my profile to play music too, that’d also be nice cause I’ve tried multiple methods with that too and none of them worked either,,, and learning how to make my blog entires look fun and stuff would also be cool,,, but the photos are the most important to me rn !  CAN SOMEONE PLEASE HELP ???  T^T