Make an LED sign?

Question

Electronics

Good afternoon! I am a beginner radio amateur/electronic engineer. I want to make a sign with LEDs for a friend, please tell me how to implement it.
Maybe there are some schemes ...
Please do not judge the "stupidity of the question" because I'm 14))
Below is a photo of what I want to get

Accordingly, one green circle is an LED

Answer 1

It is necessary to start, oddly enough, with the external design, i.e. corps. It is better to choose a ready-made one of the right size, with a decent design, so that it would not be embarrassing to show it later.
Next, a plastic insert is made in which holes for the diodes are drilled, as in the photo. If it fails or breaks, it can be replaced. The drill must be selected exactly according to the diameter of the diode so that they sit tight and do not fall out. You can put them on glue, and the plus leg is all in one direction (this will make it easier to conduct electrical wiring). Next, we solder the electrical circuits, connect the power, and ... - profit!