documentclass{article}
usepackage{fancyhdr}
usepackage[utf8]{inputenc}
%And more packages

%Margins
setpapersize{A4}
setmargins{3.5cm}
{2cm}
{14.5cm}
{23.42cm}
{0pt}
{1cm}
{0pt}
{2cm}

%fancy
renewcommand{headrulewidth}{0pt}
lhead{includegraphics[width = 0.45textwidth]{image1}}
rhead{includegraphics[width = 0.16textwidth]{image2}}
}

begin{document}
    title{Hello world}
    author{author}
    date{empty}

    maketitle

    thispagestyle{fancy}

    bla bla bla bla bla bla bla bla bla %one page of text and images

    newpage
    thispagestyle(plain)
    bla bla bla bla bla

end{document}