Enlarging a digital pattern

[u/Plenty-Ear-9167]

Bought pattern off Etsy, digital.
Pattern looks good on monitor.
Computer does not have Adobe, so could not resize pattern that way.
Took pattern to Staples & enlarged it on their copy machine.
From the print original, I enlarged 154%, 154% again, then 129%.
Chat GPT says that is 397%, which is great; I was aiming for 400%.

Pattern has 2 sizes. (These are children’s dragon wings.)

The smaller size pattern worked out fine.

I could not get the larger size pattern to work out, though.
I couldn’t get it the right size, and I had to cut the pattern into pieces, but I just couldn’t get it to work, get the right size & fit onto the paper sizes available.

I was frustrated to the point of tears, so just came home to try to sew the smaller size first.

What should I have done differently? This has taken me hours, which should have been simple with the right technology & equipment

Argh

I don’t know how to flair, either