Part 1 involved MeOH addition to form the key tetrahedral intermediate. Part 2 involves loss of H2O from the tetrahedral intermediate to form the ester. Part 2 of 2: Intermediate species (from Part 1):

For all remaining steps in the mechanism: 1) Draw each species (organic and inorganic) resulting from the previous step. Each step will include all of, and only, the atoms given in the first step (i. e., do not use extra reagent molecules/ions, and do not omit spectator ions).

(Depending on how you drew the mechanism, the drawing area below might not be needed. Do not draw the final products.)