Inset your image by selecting it, pressing G to move it, and Z to lock the movement on the Z axis.To get more dimensionality, you can either inset your image or extrude your frame.E + X, Y, or Z : Extrude a face along an axis.S + X, Y, or Z : scale your object along an axis.G + X, Y, or Z : move your object along an axis.Tab : Switch from Object Mode to Edit Mode.Checking this box can often dramatically reduce file size and can be especially useful for web-optimizing models you've downloaded online.
Many free PBR textures come as PNGs and TIFs which can make a model with low polygons unnecessarily huge. Under the Images section of the Geometry tab, select JPEG Format.More tutorials for making use of Blender simulation and exporting it for the web are forthcoming. If you are using modifiers, tick "Apply Modifiers." Be aware, physics modifiers and may not export as you expect them.