Improve/redrawing figures and tables for a scientific article

The journal guidelines for figures and tables are shown below. I have 5 figures (4 in powerpoint and 1 in excel: a chart); and 5 tables in excel. Figures are to be inserted in a MS word document with high quality (TIFF minimum 300dpi, preferably more). Tables can’t be inserted as an excel table or image, and must be entirely done in MS word. I need to optimize and improve readability because I have tables and figures with a lot of text. Journal guidelines says that text in figure should be visible even after a 50% reduction size, and preferably in Arial font. In a nutshell, formatting and optimizing/redrawing 5 figures (one is a chart) and 5 tables is needed. Guidelines for Figures and Tables Figures Figures should be inserted in the Word text. Right click on the picture and use option "in line with text". Center them or, better, use the 'Figure' style of the style sheet. Please ensure that all text in your figures is legible, even after a 50% reduction in size. Arial font should be used preferably. Solid black bars in bar graphs tend to overwhelm other parts of the graph; use colored, shaded, or hatched bars in preference to black ones. Color figures are accepted, but authors should make sure that figures are also legible when viewed or printed in black and white. Tables Leave each table within the file and place it after the first paragraph that refers to it. Do not insert tables as graphics from other programs; please ensure they are in MSWord and not imported. Before each table add a brief descriptive caption on a separate line. Tables should be numbered sequentially. Try to avoid tables which are very long or too short. Do not insert vertical lines. For large tables, select the table and choose the format "landscape" in the menu File/Page setup/. Use tabulations or MSWord tables with cells.