Under the 'Color' tab, select 'Printer' in the 'Output intended for' menu. For better rendering of the LaTeX equations, check 'Embed PDF & EPS files' in the 'General' tab of 'Export > Save as PDF'. Highlight words, rearrange frames, adjust margins, remove the magenta borders, and so on.

Tweak the results until I'm happy with the results.

Use the 'Properties' box (available with F2) to assign styles to frames.

Create styles (which you only need to do once) for the title, authors, section titles, frame text, and so on.

Define colors (which you only need to do once), under Edit > Colors.

There's a bug in the version of Scribus I use which makes the frames disappear even with the option to make them visible checked (in the View menu), therefore I set their border color to something like Magenta to stop losing them while I'm positioning them.

Lay out frames (text frames, image frames and render frames, which will contain the LaTeX equations).

A0) and orientation (landscape or portrait).

Create a document with the right size (e.g.

By the way I usually make graphs with matplotlib (as I usually code in Python), diagrams with Dia, and everything else (including drawings of mice) with Inkscape. I create a LaTeX file with the equations I want to insert (and checks that everything renders as I want it when compiling), a text file with some of the largest chunks of text I will want to insert (actually, it's often mostly my references, as I try to write down as few words as possible), and all my figures. However it is essential to ensure a smooth process afterwards, and also to make me realize when there is no way the amount of material I want to share is going to fit. This is usually a rather quick step (which often makes me consider hand drawing my posters, but that is another story).

Design the layout of my poster on a piece of A4 paper.

Scribus python