I recently got myself a prusa i3, that I needed to assemble and adjust myself. As expected, the first prints was of quite poor quality. After better adjustment, I improved a bit the print, but I am not quite there yet. I was hoping to get some advices on how to improve the print based on few pictures of the 3dbenchy boat I printed.

The most annoying point, on the following image, is the dent that I have in the hull, on the front of the boat. And one layer appears to be missing or close. And I have another one just like it in the top cabin. I also think that my specific settings on the first layers shouldn't be there, because they don't improve anything, but that is another topic.

Also, when I look on the top, I have a lot of filament strings getting here and there, the path of the tip of the printer is quite visible on the roof and floor, the steering wheel is not to clear, etc.

Also, at the end of the boat, I am supposed to have some letters, but I cannot read them because of the poor definition of the print...

How can I improve the quality of the print? What settings should be looked at?