Aventure Creation - Uni and the Hunt for the Lost Horn

hey peeps! so.. I'm kinda new to Roll20, and I've been trying to do quite a few things, no success actually, I'm trying to create the "Uni and the Hunt for the Lost Horn" on Roll20, and I simply can't as I'm a complete newbie, I'm pretty sure that's the issue my main pain point has been to "align" (lacking a better word) the map grid provided by DnD Beyond on Roll20 would there be any good soul to help me out with this?

Have you read the Help Center article on Sizing and Aligning Maps? <a href="https://help.roll20.net/hc/en-us/articles/360039243994-Sizing-and-Aligning-Maps" rel="nofollow">https://help.roll20.net/hc/en-us/articles/360039243994-Sizing-and-Aligning-Maps</a>