Hi printing people. I'm quite new to this and having a problem with the

Hi printing people. I’m quite new to this and having a problem with the very first layer. The rest of the print looks clean and I’m very satisfied with it. I’m thinking bed too hot? I tried from 25 to 40 C but at lower temps it sometimes pops up from the bef surface, I’m asking here because I may be missing something obvious. Any help appreciated ( the photo shows the worst instance of what happens, usually it isn’t that bad but still it’s bad.)

Bump. I add that I was playing around with the bed levelling too, paper method. If I get the hot end closer it doesn’t do that but it looks like too much filament is being extruded, it’s not I tried reducing the flow but further layers prooved that 100% is the right amount (it’s well calibrated 100mm commanded = 100mm extruded) so I’m kinda lost here…