I got my last document ready, checked everything 3 times and finally submitted my online app today! Aaaand, now I'm kicking myself because I realized my sponsor and I didn't print and sign forms IMM 1344 and IMM 5532. Honestly, it was so confusing to read "you don’t need to print them and sign by hand - you'll sign for everything electronically at the end" in so many places and then finally find the two exceptions when it was too late. I'm so annoyed with myself, as there's nothing to do but wait 2 months for IRCC to tell me I'm missing signatures and then resubmit my app then. Feels like I just flushed 2 months down the toilet. Oh well.