I would paint it white first or a base color. Not sure what you mean with pre-treat.

If your using a wood board do you pre treat the board first with anything?

Thank you Deborah, thank you for the tips. I will try and do my best to keep track of the right then’s and where they go. English isn’t my first language so I tend to confuse them all the time.

Thank you Angela. Yes it does get stuck to the cups. I recently learned it’s best to tape the bottom of the canvas with tape. Once the resin sets and the drips are created on the bottom you just remove them with the tape. Hope this makes sense.

Awesome tutorial!!! Appreciate all the details! I’ve worked with art resin and wondering if you had problems with the side drips sticking to the plastic cups? Do you know if the resin will stick to the yellow art cones? I struggle most with the resin that drips on the sides…🤷‍♀️