Looks like you got a good fitment. Did you leave the vinyl unglued, glue the entire sheet, or glue on the perimeter?
I know some folks use the original flooring as a template but I'll share what is done typically by a flooring installer (if needing a template). A paper template is taped to the floor of the area to be covered using red rosin paper. The paper can be set back from walls and obstructions for about 1". A square and straight edge is used to scribe lines on the paper following the walls and obstructions. Pipes, toilet flanges, radiator feet, or other cuts that need to be made are done when in place. When everything is scribed and marked on the paper, the paper is removed from the floor and taped onto the new sheet of vinyl, being cognisant of the pattern on the vinyl. The sheet is then cut using the same square and straight edge used to mark the paper, following the scribed lines.
Using a paper template like this eliminates any measuring and is better than using the original. removed vinyl as the paper doesn't get stretched or torn as may happen with the original sheet.
All in all, I'd say you did a great job. Happy camping.
Oh, BTW, purpose-mfg floor filler or Durham water putty will probably get a little bit better result for filling seams and screw holes.
