I am undergoing training. How should i make a pleasing report of wt i have learned till date to submit by boss?

Be clear and concise, use proper English without any abbreviations, and use a capital letter for 'I'.|||Set it out well. Be positive and enthusiastic without overdoing it. If there are any negatives, phrase them thoughtfully and end on a positive 'up' note. Be sure to check spelling, grammar and punctuation.|||Lie?