Pretty rough texture to the finish. Try smoothing the paint with 1500-2000 grit sandpaper and then compound afterwards. What brand of spray paint did you use, btw? Painting with a spray can is very tricky because it's not consistent and every attempt is somewhat different than the last so basically you have to practise and find out what works well for you. I give you credit for not giving up on this build because I probably would have thrown the model against the wall or something
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As for stripping paint, I like to use 'Easy Off'. It's made for cleaning ovens and it's very toxic(burns when inhaled or on bare skin) but works very, very well for most kinds of paint and doesn't harm plastic. I'm sure you can find something equivalent to it in Norway.
Al