Help Size Check Me - Just got In Mail

I just bought my first pair of boots and ordered 1/2 size down from sneakers. Captains 11.5 in Terracotta. They seem too tight to tell but could fit well. I don't want my toes scrunched up far in a small toe box area unless that's correct.

My big toe is where my thumb starts here. Are they too big? I want to wear them out tonight and need quick help on whether to return? Thanks!