Hello. I have a t-shirt design I was working on this pasted weekend, and no mater what I did in Affinity Photo, I could not cut out a white background from a scene shot I had taken to use on this product. I'm trying to switch from Photoshop, where I could cut out a white background with ease, to Affinity Photo looking pretty bad and unusable. Could anyone please tell me what I am doing wrong here? I would love to stop using Photoshop, but I can't when I can't even cut out a simple background. Note: I put a white box over the design just so no would think I'm trying to advertise my T-shirt here.