u/BronzeFour

I admit I don't have a degree in graphic design, nor am I particularly smart when it comes to image editing software but I've been researching this subject and I absolutely do not understand where I'm going wrong.

I've generated an illustration on midjourney, opened it on canva pro and have edited it to my liking. Now I want to print it in large size to use as wall art in my kids bedroom. I've set it up as 2x3 aspect ratio, it has a width of 3600 pixels and height of 5400 pixels but a DPI of 96. I saw this on Windows upon file inspections on details. Then, to make sure, I uploaded it to a DPI checking website and this confirmed it was only 96. Then I asked Claude and it said it's only a tag, that it doesn't matter, some canva feature which is missing. Upon googling I see images must be 300 DPI so that they look good when printed, I don't want to risk printing such a big picture for it to be a blurry mess because it'll be expensive and wasteful.

Then I found out I can download as PDF on canva and convert to JPG online where I can select the 300 DPI output. But this makes the image file enormous and I don't know if it actually works in the end.

Is there some easy simpler way to directly grab my image off canva in 300 DPI in the aspect resolution I want with great resolution to print big?

I know it's no dead cells, subnautica, balatro or whatever but I am in the mood for some cozy match-3 or merging game. Must be portrait mode.

Preferably premium or pay to remove ads.

I'm aware it's very oversaturated, although I kept being told you still stand a chance to make a little side money if you go about it the proper way. I've got 26 listings of digital art downloads with 0 sales and barely any views, even though I've put in the work finding decent keywords via erank, followed several guides and tutorials to get decent listings and good images. It's 2 months old. I've uploaded stuff such as relatable animal quote prints for bathroom/kitchen, new home owners decor and things like that. Basically all over the place.

Should I just focus on a single specific niche and upload art which is all the same mood/style/color palette instead of uploading art I enjoyed designing for keywords which scored decently well?

Don't know, I'm stuck and not sure where to ask...I really want to make this work...

Should I even bother with German ETB's or are only the English ones worth it to save for 5-10+ years? Don't know if it's worth it to buy English ones where the shipping is like 20-30 bucks...