I want to customize my tumblr. I know a little in HTML but my head just hurts whenever I try it XD

I'm also new in tumblr and I'm not sure what I am doing right now hahahah

So if anyone can help me design or customize my tumblr pls... it'll really be nice! Btw, it'll be kinda look like an online shop... Uhm.. I can give 100 karma points atleast. As long as it'll satisfy me hahaha :))

please help me hahahahha so yeah. Okay bye hahah just comment here or pm meee :)