Bold text for messages on postcards, current is too thin, small, difficult to read, improve quality

i received some postcards i sent myself and to be honest ,... not impressed at all - cutting / trimming was not straight, white border was completely cut off at the top of postcard, quality of the card stock was ok... could be improved
i am a graphic designer by trade and something i noticed is that the text (the font you guys use) is so thin on the front, and so small on the back... i can see older people having problems to read the info on the front and back of the postcards
GREAT app tho, great customer service too! keep going and thx!