A basic statement with custom title, header, footer and margins

basic_statement.tex

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%                                  PREAMBLE
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\documentclass[11pt]{article}
\usepackage{amsmath,amssymb,mathrsfs,graphicx,overpic,color}
\usepackage{verbatim,stackrel,url,float,enumerate,cleveref}

\usepackage{lipsum}

% Custom margins - FIRST PAGE
\newcommand{\tbmargin}{0.75in}
\newcommand{\lrmargin}{0.65in}
\usepackage[top=\tbmargin,
            bottom=\tbmargin, 
            left=\lrmargin, 
            right=\lrmargin,
            headsep=0.15in,
            headheight=13.6pt, 
            % heightrounded,
            % showframe,
            ]{geometry}

% Custom section title sizing
\usepackage[small]{titlesec} 
% \titlespacing{command}{left spacing}{before spacing}{after spacing}[right]
% spacing: how to read {12pt plus 4pt minus 2pt}
%           12pt is what we would like the spacing to be
%           plus 4pt means that TeX can stretch it by at most 4pt
%           minus 2pt means that TeX can shrink it by at most 2pt
%       This is one example of the concept of, 'glue', in TeX
\titlespacing\section{0pt}{12pt plus 4pt minus 2pt}{0pt plus 2pt minus 2pt}
\titlespacing\subsection{0pt}{12pt plus 4pt minus 2pt}{0pt plus 2pt minus 2pt}
\titlespacing\subsubsection{0pt}{12pt plus 4pt minus 2pt}{0pt plus 2pt minus 2pt}
\setlength{\parindent}{0pt} % get rid of indentation

% CUSTOM HEADER/FOOTER
\usepackage{fancyhdr} 
\pagestyle{fancy} % use this style on all pages
\lhead{TITLE OF DOCUMENT}
\rhead{AUTHOR}
\rfoot{DATE}
\lfoot{ETC FELLOWSHIP}
\cfoot{}
\renewcommand{\headrulewidth}{0pt} % remove bar
\renewcommand{\footrulewidth}{0pt}

% FIRST PAGE style
\fancypagestyle{firststyle}
{
    % \fancyhf{}  % clear all h/f on first page
    \lhead{}
    \rhead{}
}

% My custom commands 
% \input{Macros}


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%                             BEGIN DOCUMENT
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\begin{document}
% \maketitle

% use custom (no) header/footer on first page
\thispagestyle{firststyle} 
% Custom title/author on first page
% Raise the custom title up, since we dont have a header
\vspace*{-0.5in}
\begingroup  
  \centering
  \Large Document Title \\ 
  \large My name \\ 
  \texttt{myemail@email.com}\\[1em]
\endgroup

\section*{Temp}
\lipsum[1-10]

\subsection*{temp2}
\lipsum[1-5]

\section*{Temp3}
\lipsum[1-10]
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%                                BIBLIOGRAPHY
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% \bibliographystyle{IEEEtran}
% {\footnotesize \bibliography{research_statement_references}}


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\end{document}