How to paint a Christmas Tree with 4 colors

In this video, I challenge myself to paint a Christmas Tree with just the colors red, yellow, blue, and white.

Here is the link I mentioned in the video: https://www.walmart.com/grocery/ip/Daler-Rowney-Simply-Acrylic-Paint-Set-12-Assorted-Colors-12-ml-0-4-Fl-Oz/17617569?adid=22222222227015423676&gclid=CjwKCAiAtej9BRAvEiwA0UAWXvT9ufZq7pXe-p6EzcOjOthehZ2Mn9v88kIUHM4Va_PeC2Pr3RGLIRoCwg4QAvD_BwE&selected=true&selectedSellerId=0&veh=sem&wl0=&wl1=g&wl10=120643079&wl11=local&wl12=17617569&wl13=5443&wl2=c&wl3=88525870248&wl4=aud-430887228898%3Apla-122963456448&wl5=9016138&wl6=&wl7=&wl8=&wl9=pla&wmlspartner=wlpa

I use an 8x10 artist's loft canvass, and some sort of brushes like these: https://www.amazon.com/Elisel-Brushes-Watercolor-Adults-Create/dp/B083G1B3WS/ref=sr_1_10?_encoding=UTF8&c=ts&dchild=1&keywords=Art%2BPaintbrush%2BSets&qid=1605458707&s=arts-crafts&sr=1-10&ts_id=12897541&th=1