Here's how you calibrate your 3D printer! There are two things you want to get right: your bed level and your resin slicer settings.
Every resin printer is a bit different!
Follow the instructions that came with your printer AND find a YouTube video. It really helps to read AND see the process done. There are official videos from Elegoo that guide you through specific printers here.
When leveling your printer, you loosen your build plate, lower it to the screen until snug, then tighten. Printers normally come with a leveling paper to help you determine how snug to make it to the screen before tightening.
Every resin is a bit different!
I cover a great starting point here. In order to get your prints looking their best, there is a test you can do.
This calibration print from Ameralabs is excellent! I attached the STL to download at the bottom of this post.

Depending how it prints will tell you a lot! Here are some details on what you should be looking for. Thank you to Tiff from our Discord for sharing! Here is a detailed write of Amerlabs explaining each piece in more detail. Print a calibration print multiple times at different normal exposures to compare results.

There are many other calibration prints you can use! Danny covers pretty much all of them here. Let me know if you have any questions!
More topics I've covered linked below!
You can also ask me questions in Our Discord :)
🛠️ Flexible Build Plate (highly recommend!)
📝 Slicer Settings
🎁 3D Printing Toolkit : Part 1 (resin post-processing)
❓ Upcoming Topics!!
Feel free to request more topics!
Happy Printing!
Mia Kay