This is a height comparison chart of Gundams.
I've always wanted to recreate an image I often see online, so I gave it a try.
The key points I paid particular attention to were partially painting the color scheme to roughly match the original, applying decals and a glossy top coat so that they would look unified when lined up.
I'd love to do an Another Gundam edition someday.
Their official heights and weights are as follows. I wonder if they're accurate to the original.

Gundam height comparison chart (Universal Century) | めがね's Gunpla works