Great work on posing , great work keeping the sketching process nice and rough for ideation . For proportions though, specifically in perspective , i would suggest you to add a proportion checking process during the refining part. In this part i want you to draw a box covering the dimensions of the form , and then to subdivide it into smaller parts by connecting the diagonal joins of box and drawing a cross then dividing it from there. Repeat until you got the numer of sub-divisions necessary for you . Now you could compare the "Proportions" of the parts of your subject accurately in 3- dimensions, and correct yourself by this quick and small grid. Proportions in perspective are innately hard, and you would require to self check and correct, but over time it will slowly become intuitive for you to imagine boxes and guidelines over your subject. Then you may want to skip this step from afterwards.

@saritos

Peindre

Hello Amazing job on posing! It's one of the trickiest and you nailed it for Zoro, giving him an extra badass mood! Love it! Here are my adjustments: Use a perspective grid to help you position the figure in space and make necessary corrections. This section, in my opinion, cannot be skipped because you wish to make easier the creation process. Perspective grid tools are already included in some programs, such as Clip Studio Paint, and many developers are creating unique plug-ins for other digital drawing software. You will be continuously reviewing your line placement in perspective, so keep your grid on until the drafting step is complete. A single mistake may easily cause the entire drawing to collapse. Keep in mind how proportions are distributed in this perspective and how muscles are grouped using basic geometric forms. For this view, the neck with toros was extended and the head was slightly smaller. Additionally, be mindful of how you form the arm's muscles; the upper portion appears flat. I hope it helps! I encourage you to finish this awesome sketch!