The most important thing is consistency. Choose an aesthetic/layout/signaling system for your forms and stick to it throughout all your forms. Copy and paste are your friends. My titles/subtitles are all the same color, size, font, in the same location and justification. My navigation buttons are the same color, location and font throughout my forms. My action buttons are the same color, location and font. My user inputs are the same color and font. Etc. etc.
I think forms can fall into 3 categories--Menus, Input forms and popups. I've been doing this for years so I have a generic database where I store my default forms for each of those categories. I simply copy the type I need and customize it.
I suggest you start with a simple data input form based on a table. I'd let the Wizard set it up and then spend a few hours making that form look exactly how you want it. Then copy the form and use it for another table. Then another. Go through all the input forms you will need. Most likely as you build all those forms you will get ideas that require you to go back and implement those ideas in all your past forms.
After that, spend a few hours making Menus in the same fashion. Same with the popups (however you might not need this form type).