So after the photo is prepared, you must decide what settings to use based on how you want the photo to look and the material you are using. There is no" one size fits all" setting - especially when you haven’t stated what wood you are using.
I suggest reading through the following post about how one experienced Glowforge owner experimented with settings to try and get the desired result for a photo. There are so many posts that share experience with photo engraving on wood that I feel the search function will be your best bet. Reading and experimenting.
Start here: Grandparents Photo on PG Maple Hardwood
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