Watercolor, cold press paper, A3

I'm new to the group. I've been drawing and painting all my life but I'm recently retired and have some time on my hands... So, I've plunged back into painting. I started with watercolors, but I was only successful maybe one out of ten attempts. Ugh. Then I dug out my acrylics kit and found myself enjoying the process again. Here's my latest painting- a great blue heron in the early evening (8x10 on canvas panel). I look forward to meeting you all and continuing the journey. Cheers!

Hi! I’ve just joined! I’m at the buying supplies stage. What size canvases are you all generally working on for your paintings to get started with? I’m completely new to oil painting. Done a few weeks of watercolor. Thanks!