Hi Lars, welcome to the forum. You will have noticed we have a digital drawing forum here.
I have tried many digital apps on the iPad but settled on SketchClub some 10 years ago but I haven’t done any recently. I may pick it up again as I have been donated an iPad9 by my son.
UPLOADING PICTURES
If you use the Insert picture (mountain) icon there’s no need to resize your picture, you can upload jpg pictures of any size. When it appears in your post, find the cursor to the right of the picture and click Enter to get a new line. That should fix your picture in place. Inserted pictures can be right-clicked and opened full size in another window or tab. You can mix pictures and text and there is no limit to the number of inserted images in a post. Always start a new line before inserting a picture to separate it from the text.
Alternatively, scroll down and use the Attach facility, they then appear at the bottom of your post and can be double-clicked to enlarge them to full size. You are allowed a maximum of four attached pictures.
Doug
We must leave our mark on this world